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Heat and Mass Transfer in Building Energy Performance Assessment

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ISBN: 9783039219261 9783039219278 Year: Pages: 122 DOI: 10.3390/books978-3-03921-927-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2020-01-07 09:08:26
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The building industry is influenced by many factors and trends reflecting the current situation and developments in social, economic, technical, and scientific fields. One of the most important trends seeks to minimize the energy demand. This can be achieved by promoting the construction of buildings with better thermal insulating capabilities of their envelopes and better efficiency in heating, ventilation, and air conditioning systems. Any credible assessment of building energy performance includes the identification and simulation of heat and mass transfer phenomena in both the building envelope and the interior of the building. As the interaction between design elements, climate change, user behavior, heating effectiveness, ventilation, air conditioning systems, and lighting is not straightforward, the assessment procedure can present a complex and challenging task. The simulations should then involve all factors affecting the energy performance of the building in questions. However, the appropriate choice of physical model of heat and mass transfer for different building elements is not the only factor affecting the output of building energy simulations. The accuracy of the material parameters applied in the models as input data is another potential source of uncertainty. For instance, neglecting the dependence of hygric and thermal parameters on moisture content may affect the energy assessment in a significant way. Boundary conditions in the form of weather data sets represent yet another crucial factor determining the uncertainty of the outputs. In light of recent trends in climate change, this topic is vitally important. This Special Issue aims at providing recent developments in laboratory analyses, computational modeling, and in situ measurements related to the assessment of building energy performance based on the proper identification of heat and mass transfer processes in building structures.

Pd-based Membranes. Overview and Perspectives

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ISBN: 9783038977025 Year: Pages: 190 DOI: 10.3390/books978-3-03897-703-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemical Engineering --- Technology (General)
Added to DOAB on : 2019-04-05 10:34:31
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Palladium (Pd)-based membranes have received a great deal of attention from both academia and industry thanks to their ability to selectively separate hydrogen from gas streams. The integration of such membranes with appropriate catalysts in membrane reactors allows for hydrogen production with CO2 capture that can be applied in smaller bioenergy or combined heat and power (CHP) plants, as well as in large-scale power plants. Pd-based membranes are therefore regarded as a Key Enabling Technology (KET) to facilitate the transition towards a knowledge-based, low-carbon, and resource-efficient economy. This Special Issue of the journal Membranes on “Pd-based Membranes: Overview and Perspectives” contains nine peer-reviewed articles. Topics include manufacturing techniques, understanding of material phenomena, module and reactor design, novel applications, and demonstration efforts and industrial exploitation.

Friction Stir Welding and Processing in Alloy Manufacturing

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ISBN: 9783039212071 9783039212088 Year: Pages: 142 DOI: 10.3390/books978-3-03921-208-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Analytical Chemistry
Added to DOAB on : 2019-12-09 11:49:15
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Friction stir welding (FSW) is considered to be the most significant development in metal joining in decades and, in addition, is a ""green"" technology due to its energy efficiency, environmental friendliness, and versatility. This process offers a number of advantages over conventional joining processes. Furthermore, because welding occurs via the deformation of material at temperatures below the melting temperature, many problems commonly associated with joining of dissimilar alloys can be avoided, and thus, high-quality welds are produced. Due to this fact, FSW has been widely used in different industrial applications where metallurgical characteristics should be retained, such as in the aeronautic, naval, and automotive industries.

Microstructure and Mechanical Properties of Structural Metals and Alloys

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ISBN: 9783038975052 9783038975069 Year: Pages: 272 DOI: 10.3390/books978-3-03897-506-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-06-26 08:44:06
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The papers collected in this special issue clearly reflect the modern research trends in materials science. These fields of specific attention are high-Mn TWIP steels, high-Cr heat resistant steels, aluminum alloys, ultrafine grained materials including those developed by severe plastic deformation, and high-entropy alloys. The major portion of the collected papers is focused on the mechanisms of microstructure evolution and the mechanical properties of metallic materials subjected to various thermo-mechanical, deformation or heat treatments. Another large portion of the studies is aimed on the elaboration of alloying design of advanced steels and alloys. The changes in phase content, transformation and particle precipitation and their effect on the properties are also broadly presented in this collection, including the microstructure/property changes caused by irradiation.

Keywords

Mg–Sm–Zn–Zr --- dynamic precipitation --- microstructure --- mechanical property --- bimodal ferrite steel --- ultrafine-grained microstructure --- mechanical properties --- corrosion resistance --- abnormal grain growth --- grain boundary engineering --- electron backscattered diffraction --- growth rate --- Al metal matrix composites --- microstructure --- mechanical properties --- strengthening mechanism --- hot compression --- dynamic recovery --- dynamic recrystallization --- texture --- aluminum alloys --- Al-Fe-Si-Zr system --- microstructure --- hardness --- electrical conductivity --- metal–matrix composite --- high-pressure torsion --- microstructure evolution --- microhardness --- shape memory alloy --- columnar grain --- Cu-Al-Mn --- elastocaloric effect --- strain rate --- measuring temperature --- creep --- lead-free solder --- Sb solder --- Sn-8.0Sb-3.0Ag --- solder microstructure --- martensitic steels --- creep --- precipitation --- electron microscopy --- high-Mn TWIP steel --- cold rolling --- annealing --- recovery --- recrystallization --- strengthening --- austenitic 304 stainless steels --- sub-merged arc welding --- post-weld heat treatment --- aluminum alloys --- aging --- precipitation --- electrical resistivity --- mechanical properties --- ferritic steel --- irradiation --- nanoindentation --- hardness --- transmission electron microscopy (TEM) --- microstructure --- high-entropy alloys --- high-pressure torsion --- microstructure evolution --- twinning --- mechanical properties --- welded rotor --- weld metal --- impact toughness --- PWHT --- microstructure evolution --- Cu-Cr-Zr --- precipitation --- orientation relationship --- recrystallization --- annealing twins --- structural steel plate --- nonmetallic inclusions --- rare earth control --- M23C6 --- ion irradiation --- M6C --- amorphization --- RAFM steels --- hot stamping --- press hardening --- martensitic expansion --- force peak --- cycle time --- high-Mn steel --- deformation twinning --- dynamic recrystallization --- grain refinement --- work hardening --- in situ tensile testing --- super duplex stainless steel --- SDSS --- low-temperature --- ?-phase --- SEM --- EBSD --- microstructure analysis --- n/a

Structure and Mechanical Properties of Transition Group Metals, Alloys, and Intermetallic Compounds

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ISBN: 9783039211463 9783039211470 Year: Pages: 222 DOI: 10.3390/books978-3-03921-147-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2019-08-28 11:21:27
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The aim of this Special Issue is to present the latest theoretical and experimental achievements concerning the mechanisms of microstructural change in metallic materials subject to different processing methods, and their effect on mechanical properties. It is my pleasure to present a series of compelling scientific papers written by scientists from the community of transition group metals, alloys, and intermetallic compounds.

Keywords

metal matrix composites --- laser metal deposition --- Inconel 625 --- additive manufacturing --- laser processing --- metal matrix composites --- Z-pin reinforcement --- delamination --- carbon fiber --- strengthening mechanisms --- severe plastic deformation (SPD) --- cross-channel extrusion (CCE) --- back pressure (BP) --- numerical simulation (FEM) --- physical modeling technique (PMT) --- metal–matrix composites (MMCs) --- carbon fiber --- mechanical properties --- z-pin reinforcement --- laminate --- titanium alloys --- high pressure torsion --- microhardness --- Cu–Ag alloy --- high-pressure torsion --- ultrafine microstructure --- phase dissolution --- microhardness --- friction stir welding --- heat treatment --- AA2519 --- microstructure --- fatigue --- fractography --- AZ91 --- magnesium alloys --- creep --- high pressure die casting --- additive manufacturing --- Ti-6Al-4V --- LENS --- mechanical characterization --- twin roll casting --- magnesium alloy --- calcium --- Mg-Zn-Al-Ca alloy --- texture --- flow curve --- processing map --- honeycomb structure --- additive manufacturing --- laser engineered net shaping --- LENS --- Ti6Al4V alloy --- energy absorption --- dynamic tests --- solidification thermal parameters --- Cu-Al-Ni-Fe bronze alloys --- hardness --- microhardness --- specific intermetallics --- MAX phase --- Ti3SiC2 --- composite --- high energy ball milling --- spark plasma sintering --- structure --- mechanical properties --- deformation behavior --- tribaloy-type alloy --- CoCrMoSi alloy coatings --- T-800 alloy --- Laves phase --- Laser Engineered Net Shaping (LENSTM) --- electron microscopy (in situ SEM) --- delamination --- metal matrix composites (MMCs) --- z-pinning

Wood Properties and Processing

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ISBN: 9783039288212 / 9783039288229 Year: Pages: 350 DOI: 10.3390/books978-3-03928-822-9 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2020-06-09 16:38:57
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Wood-based materials are CO2-neutral, renewable, and considered to be environmentally friendly. The huge variety of wood species and wood-based composites allows a wide scope of creative and esthetic alternatives to materials with higher environmental impacts during production, use and disposal. Quality of wood is influenced by the genetic and environmental factors. One of the emerging uses of wood are building and construction applications. Modern building and construction practices would not be possible without use of wood or wood-based composites. The use of composites enables using wood of lower quality for the production of materials with engineered properties for specific target applications. Even more, the utilization of such reinforcing particles as carbon nanotubes and nanocellulose enables development of a new generation of composites with even better properties. The positive aspect of decomposability of waste wood can turn into the opposite when wood or wood-based materials are exposed to weathering, moisture oscillations, different discolorations, and degrading organisms. Protective measures are therefore unavoidable for many outdoor applications. Resistance of wood against different aging factors is always a combined effect of toxic or inhibiting ingredients on the one hand, and of structural, anatomical, or chemical ways of excluding moisture on the other.

Keywords

artificial weathering --- blue staining fungi --- colour change --- natural weathering --- wood --- marketing --- material preference --- urban housing --- immigrants --- building culture background --- building material --- chemical changes --- colour changes --- infrared spectroscopy --- hardwoods --- roughness --- Douglas-fir --- lumber --- non-destructive testing --- modulus of elasticity (MOE) --- stiffness --- thinning --- silviculture --- wood based composites --- hybrid beams --- bending stiffness --- flexural rigidity --- aluminium reinforcements --- wooden windows --- end-product-based fiber attribute determinates --- longitudinal stress wave velocity --- mixed-effects hierarchical linear models --- predictive performance --- bamboo grid packing --- cooling packing --- cooling tower --- mechanical properties --- fungi --- bamboo --- heat treatment --- wood --- structural changes --- nondestructive testing --- ultrasound --- Euler-Bernoulli --- modulus of elasticity --- neural network --- high frequency drying --- moisture content --- wood --- brittleness --- density --- dynamic strength --- High-Energy Multiple Impact (HEMI)–test --- Resistance to Impact Milling (RIM) --- bamboo grid packing --- cooling packing --- cooling tower --- chemical composition --- elemental composition --- FTIR --- color --- tropical woods --- brown rot --- Coniophora puteana --- colour --- CIEL*a*b* system --- technological and product innovations --- cyclic loading --- laminated wood --- deflection at the limit of proportionality --- deflection at the modulus of rupture --- wood-processing industry performance --- orthotropic --- elastic constants --- green larch --- compression --- three-point bending --- coefficient of wood bendability --- laminated wood --- technological and product innovations --- minimal curve radius --- orthotropic --- tensile modulus --- tensile strength --- moisture content --- relative humidity --- glued lamella --- flexible chair --- weight of a user --- ultimate state --- volume yield --- European hardwoods --- low quality round wood --- strength grading --- glulam --- ultrasonic wave velocity measurement --- nondestructive assessment --- wood mechanical properties --- intra-ring variation --- dynamic modulus of elasticity --- Pinus massoniana Lamb. --- phenol formaldehyde resin --- wood impregnation --- wood properties --- cell-wall mechanics --- ultrasonic speed --- poplar seedlings --- acoustic resonance --- density --- microfibril angle --- root-collar diameter --- machinability --- Eucalyptus --- plantation timber --- fiber-managed hardwoods

Bio-Based Polymers for Engineered Green Materials

Authors: ---
ISBN: 9783039289257 / 9783039289264 Year: Pages: 568 DOI: 10.3390/books978-3-03928-926-4 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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With daily signals, Nature is communicating us that its unconscious wicked exploitation is no more sustainable. Our socio-economic system focuses on production increasing without considering the consequences. We are intoxicating ourselves on a daily bases just to allow the system to perpetuate itself. The time to switch into more natural solutions is come and the scientific community is ready to offer more natural product with comparable performance then the market products we are used to deal with. This book collects a broad set of scientific examples in which research groups from all over the world, aim to replace fossil fuel-based solutions with biomass derived materials. In here, some of the most innovative developments in the field of bio-materials are reported considering topics which goes from biomass valorization to the synthesis of high preforming bio-based materials.

Keywords

thermoplastic starch --- corn starch --- chitosan --- crosslinked microparticles --- lignin-containing cellulose nanofibrils --- poly(lactic acid) and composite films --- lignin content --- compatibility --- adsorption --- phenanthrene --- pyrene --- benzoyl cellulose --- stearoyl cellulose --- silkworm cocoons --- dense structure --- porosity --- robust fiber network --- mechanical properties --- photodegradation --- liquid natural rubber --- UV light --- TiO2 anatase --- latex state --- wood modification --- alkali lignin --- water resistance --- dimensional stability --- heat treatment --- polymeric composites --- antifouling --- metal binding --- iron chelation --- polydopamine coating --- free-radical polymerization --- galactoglucomannan --- lignin --- lignin-carbohydrate complex --- ultrafiltration --- precipitation --- hydrogel --- recycling --- thermal degradation --- mechanical degradation --- polylactic acid --- Bioflex --- Solanyl --- PHBV --- poly(lactic acid) --- pulp fibers --- biocomposite --- emulsion-solvent evaporation method --- films --- mechanical properties --- PHA --- mixed microbial cultures --- bioplastics --- feast-famine --- cost --- Peptone --- Microbial nutrient --- Anti-bacterial silver nanoparticle --- Escherichia coli --- Staphylococcus aureus --- tannin --- hemicellulose --- waste biomass --- HSQC-NMR --- pyrolysis mechanism --- hydrotropic treatment --- metal chloride --- delignification --- enzymatic saccharification --- lignocellulosic nanofibrils --- microencapsulated phase change material (MPCM) --- polylactic acid (PLA) --- toughening --- endothermic effect --- kenaf fiber --- hybrid composites --- bio-based --- film --- mechanical properties --- polysaccharides --- resource recovery --- solution casting --- orange waste --- nanocelluloses --- cellulose nanofibers --- cellulose nanocrystals --- bacterial cellulose --- cement --- fiber-cement --- Hatscheck process --- bio-inspired interfaces --- mechanical properties --- thermal stability --- sensitivity --- electrospinning --- tissue engineering --- paper-based scaffolds --- osteoblast proliferation --- polycaprolactone --- biopolymers --- nanoclays --- nanobiocomposites --- extrusion-compounding --- polyhydroxyalkanoates --- thermal properties --- mechanical properties --- differential scanning calorimetry --- nuclear magnetic resonance --- X-ray diffraction --- transparent wood --- chemical composition --- H2O2 bleaching treatment --- physicochemical properties --- cellulose --- electrical resistance --- copper coating --- electroless deposition --- humidity sensor --- strain sensor --- lyocell fiber --- asphalt rubber --- bio-asphalt --- mixing sequence --- workability --- storage stability --- tung oil --- unsaturated polyester resins --- thermosetting polymers --- structure–property relationship --- structural plastics --- ONP fibers --- silanization --- composites --- mechanical properties --- Artemisia vulgaris --- microcellulose fiber --- nanocellulose fibers --- natural fibers --- Bio-based foams --- wastewater treatments --- cationic dyes --- anionic surfactants --- pollutant adsorbents --- tannin polymer --- tannin-furanic foam --- biopolymers --- nanoclays --- bio-nanocomposites --- extrusion-compounding --- polyhydroxyalkanoates --- thermal properties --- microstructure --- volatiles --- autoxidation --- thermal gravimetric analysis --- scanning electron microscope --- headspace solid phase microextraction --- alginate sponge --- two-step lyophilization --- methylene blue --- adsorption capacity --- biomass resources --- hybrid nonisocyanate polyurethane --- solvent- and catalyst-free --- dimer acid --- melt condensation --- bacterial cellulose --- surface modification --- TEMPO oxidation --- one-pot synthesis --- immobilized TEMPO --- physical property --- skincare --- cellulose --- graphene oxide --- ionic liquid --- membrane --- transport properties --- heavy metals --- porous structure --- SAXS --- WAXS --- cellulose --- wood --- lignocellulose --- ionic liquid --- imidazolium --- fractionation --- dissolution --- GC-MS --- kaempferol --- knotwood --- larixol --- taxifolin --- vibrational spectroscopy --- n/a

Additive Manufacturing: Alloy Design and Process Innovations

Authors: ---
ISBN: 9783039283521 / 9783039283538 Year: Pages: 372 DOI: 10.3390/books978-3-03928-353-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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Additive manufacturing (AM) is one of the manufacturing processes that warrants the attention of industrialists, researchers and scientists, because of its ability to produce materials with a complex shape without theoretical restrictions and with added functionalities. There are several advantages to employing additive manufacturing as the primary additive manufacturing process. However, there exist several challenges that need to be addressed systematically. A couple such issues are alloy design and process development. Traditionally alloys designed for conventional cast/powder metallurgical processes were fabricated using advanced AM processes. This is the wrong approach considering that the alloys should be coined based on the process characteristics and meta-stable nature of the process. Hence, we must focus on alloy design and development for AM that suits the AM processes. The AM processes, however, improve almost every day, either in terms of processing capabilities or processing conditions. Hence, the processing part warrants a section that is devoted to these advancements and innovations. Accordingly, the present Special Issue (book) focuses on two aspects of alloy development and process innovations. Here, 45 articles are presented covering different AM processes including selective laser melting, electron beam melting, laser cladding, direct metal laser sintering, ultrasonic consolidation, wire arc additive manufacturing, and hybrid manufacturing. I believe that this Special Issue bears is vital to the field of AM and will be a valuable addition.

Keywords

concrete --- slag --- valorization --- cement --- circular economy --- wire feeding additive manufacturing --- wire lateral feeding --- macro defects --- side spatters --- selective laser melting --- numerical analysis --- thermal behaviour --- AlSi10Mg alloy --- design --- disc brake --- 3D metal printing --- direct metal laser sintering --- thermal stress analysis --- radial grooves --- nickel alloys --- Hastelloy X alloy --- additive manufacturing --- microstructure --- scanning electron microscopy (SEM) --- laser powder bed fusion (LPBF) --- selective laser melting --- titanium alloy --- heat treatment --- microstructure --- microhardness measurement --- arc additive manufacturing --- Al–5Si alloy --- pulse frequency --- arc current --- microstructure --- porosity --- 2219 aluminum alloy --- constitutive model --- microstructural evolution --- continuous dynamic recrystallization --- hot deformation --- selective laser melting --- amorphous alloy --- finite element analysis --- residual stress --- 2219 aluminum alloy --- intermediate thermo-mechanical treatment --- storage energy --- CuAl2 phase --- grain refinement --- selective laser melting --- GH4169 --- temperature and stress fields --- simulation --- model --- selective laser melting --- divisional scanning --- residual stress --- deformation --- thermal conductivity --- tensile strength --- inoculation --- gray cast iron --- additive manufacturing --- selective laser melting --- AlSi10Mg --- Al6061 --- SLM process parameters --- performance characteristics --- AlSi10Mg --- multi-laser manufacturing --- selective laser melting --- microstructure --- mechanical property --- additive manufacturing --- metal powders --- powder flowability --- powder properties --- aluminum --- water absorption --- laser cladding deposition --- 12CrNi2 alloy steel powder --- substrate preheating --- microstructure and properties --- residual stress --- ultrafast laser --- femtosecond --- ablation --- scanning --- additive surface structuring --- hydrophobicity --- parts design --- additive manufacturing --- fused filament fabrication --- fatigue --- Taguchi --- ABS --- additive manufacturing --- selective laser melting --- AlSi10Mg --- Al6061 --- SLM process parameters --- quality of the as-built parts --- aluminum alloys --- selective laser melting (SLM) --- mechanical properties --- selective laser melting --- H13 tool steel --- process parameters --- scanning strategy --- support strategy --- porosity reduction --- selective laser melting --- Ti6Al4V alloy --- martensitic transformation --- texture evolution --- mechanical properties --- M300 mold steel --- elastic abrasive --- PSO-BP neural network algorithm --- parameter optimization --- WxNbMoTa --- refractory high-entropy alloy --- laser cladding deposition --- rapid solidification --- bulk metallic glasses --- selective laser melting --- Cu50Zr43Al7 --- mechanical properties --- Ti-6Al-4V --- wear --- additive manufacturing --- properties --- in-process temperature in MPBAM --- analytical modeling --- high computational efficiency --- molten pool evolution --- laser power absorption --- latent heat --- scanning strategy --- powder packing --- graphene nano-sheets (GNSs) --- epoxy solder --- intermetallic compound (IMC) --- laser powder bed fusion --- additive manufacturing --- aluminum --- composition --- mechanical properties --- localized inductive heating --- hot stamping steel blanks --- tailored properties --- magnetizer --- selective laser melting --- AlSi10Mg alloy --- dynamic properties --- impact --- crystallographic texture --- Additive manufacturing --- selective laser melting --- volumetric heat source --- thermal capillary effects --- melt pool size --- selective laser melting --- Inconel 718 --- crystallographic texture --- subgranular dendrites --- epitaxial growth --- 3D printing --- continuous carbon fiber --- thermosetting epoxy resin --- mechanical properties --- Powder bed --- fatigue --- Hot Isostatic Pressure --- Electron Beam Melting --- stability lobe diagram --- milling --- process-damping --- dynamic characteristics --- thin-walled weak rigidity parts --- Al–Si --- selective laser melting (SLM) --- microstructure --- mechanical properties --- selective laser melting --- microstructure --- defects --- Inconel 718 --- laser energy density --- selective laser melting --- molten pool dynamic behavior --- equivalent processing model --- workpiece scale --- nickel-based superalloy --- numerical simulation --- metallic glasses --- composite materials --- interfaces --- additive manufacturing --- ultrasonic bonding --- 3D printing --- Al–Mg–Si alloy --- quenching rate --- microstructures --- mechanical properties --- paint bake-hardening --- precipitates --- additive manufacturing --- powder bed fusion --- selective laser melting --- regular mixing --- ball milling --- flowability --- Ti-6Al-4V --- microstructure --- element segregation --- laves phase --- vanadium --- laser cladding --- arc additive manufacture --- Al–Mg alloy --- Mg content --- microstructure --- mechanical properties --- n/a

Additive Manufacturing: Alloy Design and Process Innovations

Authors: ---
ISBN: 9783039284146 / 9783039284153 Year: Pages: 352 DOI: 10.3390/books978-3-03928-415-3 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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Abstract

Additive manufacturing (AM) is one of the manufacturing processes that warrants the attention of industrialists, researchers and scientists, because of its ability to produce materials with a complex shape without theoretical restrictions and with added functionalities. There are several advantages to employing additive manufacturing as the primary additive manufacturing process. However, there exist several challenges that need to be addressed systematically. A couple such issues are alloy design and process development. Traditionally alloys designed for conventional cast/powder metallurgical processes were fabricated using advanced AM processes. This is the wrong approach considering that the alloys should be coined based on the process characteristics and meta-stable nature of the process. Hence, we must focus on alloy design and development for AM that suits the AM processes. The AM processes, however, improve almost every day, either in terms of processing capabilities or processing conditions. Hence, the processing part warrants a section that is devoted to these advancements and innovations. Accordingly, the present Special Issue (book) focuses on two aspects of alloy development and process innovations. Here, 45 articles are presented covering different AM processes including selective laser melting, electron beam melting, laser cladding, direct metal laser sintering, ultrasonic consolidation, wire arc additive manufacturing, and hybrid manufacturing. I believe that this Special Issue bears is vital to the field of AM and will be a valuable addition.

Keywords

concrete --- slag --- valorization --- cement --- circular economy --- wire feeding additive manufacturing --- wire lateral feeding --- macro defects --- side spatters --- selective laser melting --- numerical analysis --- thermal behaviour --- AlSi10Mg alloy --- design --- disc brake --- 3D metal printing --- direct metal laser sintering --- thermal stress analysis --- radial grooves --- nickel alloys --- Hastelloy X alloy --- additive manufacturing --- microstructure --- scanning electron microscopy (SEM) --- laser powder bed fusion (LPBF) --- selective laser melting --- titanium alloy --- heat treatment --- microstructure --- microhardness measurement --- arc additive manufacturing --- Al–5Si alloy --- pulse frequency --- arc current --- microstructure --- porosity --- 2219 aluminum alloy --- constitutive model --- microstructural evolution --- continuous dynamic recrystallization --- hot deformation --- selective laser melting --- amorphous alloy --- finite element analysis --- residual stress --- 2219 aluminum alloy --- intermediate thermo-mechanical treatment --- storage energy --- CuAl2 phase --- grain refinement --- selective laser melting --- GH4169 --- temperature and stress fields --- simulation --- model --- selective laser melting --- divisional scanning --- residual stress --- deformation --- thermal conductivity --- tensile strength --- inoculation --- gray cast iron --- additive manufacturing --- selective laser melting --- AlSi10Mg --- Al6061 --- SLM process parameters --- performance characteristics --- AlSi10Mg --- multi-laser manufacturing --- selective laser melting --- microstructure --- mechanical property --- additive manufacturing --- metal powders --- powder flowability --- powder properties --- aluminum --- water absorption --- laser cladding deposition --- 12CrNi2 alloy steel powder --- substrate preheating --- microstructure and properties --- residual stress --- ultrafast laser --- femtosecond --- ablation --- scanning --- additive surface structuring --- hydrophobicity --- parts design --- additive manufacturing --- fused filament fabrication --- fatigue --- Taguchi --- ABS --- additive manufacturing --- selective laser melting --- AlSi10Mg --- Al6061 --- SLM process parameters --- quality of the as-built parts --- aluminum alloys --- selective laser melting (SLM) --- mechanical properties --- selective laser melting --- H13 tool steel --- process parameters --- scanning strategy --- support strategy --- porosity reduction --- selective laser melting --- Ti6Al4V alloy --- martensitic transformation --- texture evolution --- mechanical properties --- M300 mold steel --- elastic abrasive --- PSO-BP neural network algorithm --- parameter optimization --- WxNbMoTa --- refractory high-entropy alloy --- laser cladding deposition --- rapid solidification --- bulk metallic glasses --- selective laser melting --- Cu50Zr43Al7 --- mechanical properties --- Ti-6Al-4V --- wear --- additive manufacturing --- properties --- in-process temperature in MPBAM --- analytical modeling --- high computational efficiency --- molten pool evolution --- laser power absorption --- latent heat --- scanning strategy --- powder packing --- graphene nano-sheets (GNSs) --- epoxy solder --- intermetallic compound (IMC) --- laser powder bed fusion --- additive manufacturing --- aluminum --- composition --- mechanical properties --- localized inductive heating --- hot stamping steel blanks --- tailored properties --- magnetizer --- selective laser melting --- AlSi10Mg alloy --- dynamic properties --- impact --- crystallographic texture --- Additive manufacturing --- selective laser melting --- volumetric heat source --- thermal capillary effects --- melt pool size --- selective laser melting --- Inconel 718 --- crystallographic texture --- subgranular dendrites --- epitaxial growth --- 3D printing --- continuous carbon fiber --- thermosetting epoxy resin --- mechanical properties --- Powder bed --- fatigue --- Hot Isostatic Pressure --- Electron Beam Melting --- stability lobe diagram --- milling --- process-damping --- dynamic characteristics --- thin-walled weak rigidity parts --- Al–Si --- selective laser melting (SLM) --- microstructure --- mechanical properties --- selective laser melting --- microstructure --- defects --- Inconel 718 --- laser energy density --- selective laser melting --- molten pool dynamic behavior --- equivalent processing model --- workpiece scale --- nickel-based superalloy --- numerical simulation --- metallic glasses --- composite materials --- interfaces --- additive manufacturing --- ultrasonic bonding --- 3D printing --- Al–Mg–Si alloy --- quenching rate --- microstructures --- mechanical properties --- paint bake-hardening --- precipitates --- additive manufacturing --- powder bed fusion --- selective laser melting --- regular mixing --- ball milling --- flowability --- Ti-6Al-4V --- microstructure --- element segregation --- laves phase --- vanadium --- laser cladding --- arc additive manufacture --- Al–Mg alloy --- Mg content --- microstructure --- mechanical properties --- n/a

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