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Mapping deformation mechanisms in lamellar titanium aluminide
Ji, ZW; Lu, S; Hu, QM; Kim, D; Yang, R; Vitos, L; Hu, QM (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Lu, S (reprint author), Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden.
2018-02-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume144Pages:835-843
AbstractBreakdown of Schmid's law is a long-standing problem for exploring the orientation-dependent deformation mechanism in intermetallics. The lack of atomic-level understanding of the selection rules for the plastic deformation modes has seriously limited designing strong and ductile intermetallics for high-temperature applications. Here we put forward a transparent model solely based on first principles simulations for mapping the deformation modes in gamma-TiAl polysynthetic twinned alloys. The model bridges intrinsic energy barriers and different deformation mechanisms and beautifully resolves the complexity of the observed orientation-dependent deformation mechanisms. Using the model, one can elegantly reveal the atomic-level mechanisms behind the unique channeled flow phenomenon in lamellar TiAl alloys. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; Breakdown of Schmid's law is a long-standing problem for exploring the orientation-dependent deformation mechanism in intermetallics. The lack of atomic-level understanding of the selection rules for the plastic deformation modes has seriously limited designing strong and ductile intermetallics for high-temperature applications. Here we put forward a transparent model solely based on first principles simulations for mapping the deformation modes in gamma-TiAl polysynthetic twinned alloys. The model bridges intrinsic energy barriers and different deformation mechanisms and beautifully resolves the complexity of the observed orientation-dependent deformation mechanisms. Using the model, one can elegantly reveal the atomic-level mechanisms behind the unique channeled flow phenomenon in lamellar TiAl alloys. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[ji, zong-wei ; hu, qing-miao ; yang, rui] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [ji, zong-wei ; lu, song ; kim, dongyoo ; vitos, levente] royal inst technol, dept mat sci & engn, appl mat phys, se-10044 stockholm, sweden ; [vitos, levente] uppsala univ, div mat theory, dept phys & astron, box 516, se-75121 uppsala, sweden ; [vitos, levente] wigner res ctr phys, res inst solid state phys & opt, pob 49, h-1525 budapest, hungary
KeywordPolysynthetically Twinned Crystals Ordered Intermetallic Alloys Total-energy Calculations Stacking-fault Energies Augmented-wave Method Single-crystals Temperature-dependence Plastic-deformation Yield-stress Tial Alloys
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationSwedish Research Council; Swedish Foundation for Strategic Research; Carl Tryggers Foundations; Swedens Innovation Agency (VINNOVA); Hungarian Scientific Research Fund [OTKA 109570]; China Scholarship Council; National Key Basic Research Program [2014CB644001]; National Key Research and Development Program of China [2016YFB0701301]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79551
Collection中国科学院金属研究所
Corresponding AuthorHu, QM (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Lu, S (reprint author), Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden.
Recommended Citation
GB/T 7714
Ji, ZW,Lu, S,Hu, QM,et al. Mapping deformation mechanisms in lamellar titanium aluminide[J]. ACTA MATERIALIA,2018,144:835-843.
APA Ji, ZW.,Lu, S.,Hu, QM.,Kim, D.,Yang, R.,...&Lu, S .(2018).Mapping deformation mechanisms in lamellar titanium aluminide.ACTA MATERIALIA,144,835-843.
MLA Ji, ZW,et al."Mapping deformation mechanisms in lamellar titanium aluminide".ACTA MATERIALIA 144(2018):835-843.
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