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Thermo-Mechanical Behaviour of Structural Lightweight Alloys

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ISBN: 9783039213870 / 9783039213887 Year: Pages: 128 DOI: 10.3390/books978-3-03921-388-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2019-12-09 16:10:12
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The need to reduce the ecological footprint of water/land/air vehicles in this era of climate change requires pushing the limits regarding the development of lightweight structures and materials. This requires a thorough understanding of their thermomechanical behavior at several stages of the production chain. Moreover, during service, the response of lightweight alloys under the simultaneous influence of mechanical loads and temperature can determine the lifetime and performance of a multitude of structural components. The present Special Issue, comprising eight original research articles, is dedicated to disseminating current efforts around the globe aimed at advancing understanding of the thermomechanical behavior of structural lightweight alloys under processing or service conditions.

Advances in Hard-to-Cut Materials: Manufacturing, Properties, Process Mechanics and Evaluation of Surface Integrity

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ISBN: 9783039283545 / 9783039283552 Year: Pages: 222 DOI: 10.3390/books978-3-03928-355-2 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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The rapid growth of modern industry has resulted in a growing demand for construction materials with excellent operational properties. However, the improved features of these materials can significantly hinder their manufacture and, therefore, they can be defined as hard-to-cut. The main difficulties during the manufacturing/processing of hard-to-cut materials are attributed especially to their high hardness and abrasion resistance, high strength at room or elevated temperatures, increased thermal conductivity, as well as resistance to oxidation and corrosion. Nowadays, the group of hard-to-cut materials is extensive and still expanding, which is attributed to the development of a novel manufacturing techniques (e.g., additive technologies). Currently, the group of hard-to-cut materials mainly includes hardened and stainless steels, titanium, cobalt and nickel alloys, composites, ceramics, as well as the hard clads fabricated by additive techniques. This Special Issue, “Advances in Hard-to-Cut Materials: Manufacturing, Properties, Process Mechanics and Evaluation of Surface Integrity”, provides the collection of research papers regarding the various problems correlated with hard-to-cut materials. The analysis of these studies reveals the primary directions regarding the developments in manufacturing methods, characterization, and optimization of hard-to-cut materials.

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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eng (3)


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