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Two-Scale Thermomechanical Simulation of Hot Stamping

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Book Series: Schriftenreihe Kontinuumsmechanik im Maschinenbau / Karlsruher Institut für Technologie, Institut für Technische Mechanik - Bereich Kontinuumsmechanik ISSN: 2192693X ISBN: 9783731507147 Year: Volume: 11 Pages: X, 245 p. DOI: 10.5445/KSP/1000073431 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:58
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Hot stamping is a hot drawing process which takes advantage of the polymorphic steel behavior to produce parts with a good strength-to-weight ratio. For the simulation of the hot stamping process, a nonlinear two-scale thermomechanical model is suggested and implemented into the FE tool ABAQUS. Phase transformation and transformation induced plasticity effects are taken into account. The simulation results regarding the final shape and residual stresses are compared to experimental findings.

Metals Challenged by Neutron and Synchrotron Radiation

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ISBN: 9783038426790 9783038426806 Year: Pages: 288 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mining and Metallurgy
Added to DOAB on : 2018-02-08 13:10:36
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Neutron and Synchrotron radiation methods have matured to become powerful techniques for the study of a vast range of materials, including metals. The characterization methods comprise the categories of diffraction, spectroscopy and imaging, which themselves can alter greatly in detail, to include hundreds of variants, problems and sample environments. In a similar way, their applications to metals and hard condensed matter materials cover disciplines spanning engineering, physics, chemistry, materials science and their derivatives such as geology, energy storage, etc. … The present book, “Metals Challenged by Neutron and Synchrotron Radiation” is a first compilation in Metals of 20 original and review works on research utilizing or designing those state-of-the-art techniques at modern facilities. The Editorial reviews the context of and identifies thematic links between these papers, grouping them into five interwoven themes, namely Sintering Techniques and Microstructure Evolution, Titanium Aluminides and Titanium Alloys Under Extreme Conditions, Metallic Glass and Disordered Crystals, In Situ and Time-Resolved Response to Mechanical Load and Shock, and Thin Films and Layers. This book represents a good cross-section of the status quo of neutron and synchrotron radiation with respect to questions in the metallurgical field, which by far is not exhaustive. Nor are the methods and other materials, which motivated me to the creation of a new sister-journal, entitled Quantum Beam Science. With this, I would like to thank all authors, reviewers and contributors behind the scene for the creation of this work, presenting to you a piece of interesting reading and reference literature.

Physical Metallurgy of High Manganese Steels

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ISBN: 9783039218561 / 9783039218578 Year: Pages: 212 DOI: 10.3390/books978-3-03921-857-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Mining and Metallurgy
Added to DOAB on : 2020-01-07 09:08:26
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The Special Issue ‘Physical Metallurgy of High Manganese Steels’ addresses the highly fascinating class of manganese-alloyed steels with manganese contents well above 3 mass%. The book gathers manuscripts from internationally recognized researchers with stimulating new ideas and original results. It consists of fifteen original research papers. Seven contributions focus on steels with manganese contents above 12 mass%. These contributions cover fundamental aspects of process-microstrcuture-properties relationships with processes ranging from cold and warm rolling over deep rolling to heat treatment. Novel findings regarding the fatigue and fracture behavior, deformation mechanisms, and computer-aided design are presented. Additionally, the Special Issue also reflects the current trend of reduced Mn content (3-12 mass%) in advanced high strength steels (AHSS). Eight contributions were dedicated to these alloys, which are often referred to as 3rd generation AHSS, medium manganese steels or quenching and partitioning (Q&P/Q+P) steels. The interplay between advanced processing, mainly novel annealing variants, and microstructure evolution has been addressed using computational and experimental approaches. A deeper understanding of strain-rate sensitivity, hydrogen embrittlement, phase transformations, and the consequences for the materials’ properties has been developed. Hence, the topics included are manifold, fundamental-science oriented and, at the same time, relevant to industrial application.

Keywords

medium-manganese steel --- TRIP --- strain-rate sensitivity --- Lüders band --- serrated flow --- in-situ DIC tensile tests --- TWIP steel --- deformation twinning --- serrated flow --- dynamic strain aging --- damage --- fracture --- medium-manganese --- forging --- austenite reversion --- mechanical properties --- microstructure --- D&amp --- P steel --- processing --- microstructure --- phase transformation --- dislocation density --- mechanical properties --- MMn steel X20CrNiMnVN18-5-10 --- V alloying --- corrosion resistance --- precipitations --- ultrafine grains --- high-manganese steels --- high-entropy alloys --- alloy design --- plastic deformation --- annealing --- microstructure --- texture --- mechanical properties --- neutron diffraction --- austenite stability --- medium manganese steel --- double soaking --- localized deformation --- medium-Mn steel --- hot-stamping --- double soaking --- continuous annealing --- quenching and partitioning --- high strength steel --- high manganese steel --- crash box --- lightweight --- multiscale simulation --- high-Mn steels --- twinning induced plasticity --- cold rolling --- recrystallization annealing --- grain refinement --- strengthening --- austenitic high nitrogen steel (HNS) --- cold deformation --- fatigue --- high manganese steel --- warm rolling --- processing --- microstructure --- texture --- mechanical properties --- deformation behavior --- high-manganese steel --- deep rolling --- TWIP --- TRIP --- near surface properties --- residual stresses --- fatigue behavior --- intercritical annealing --- medium manganese steel --- phase field simulation --- medium-Mn steel --- austenite-reversed-transformation --- retained austenite --- hydrogen embrittlement --- ultrafine-grained microstructure --- strain-hardening behavior --- n/a

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