Mapping deformation mechanisms in lamellar titanium aluminide

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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.
刊名	ACTA MATERIALIA
	2018-02-01
卷号	144 页码:835-843
关键词	Polysynthetically Twinned Crystals Ordered Intermetallic Alloys Total-energy Calculations Stacking-fault Energies Augmented-wave Method Single-crystals Temperature-dependence Plastic-deformation Yield-stress Tial Alloys
ISSN号	1359-6454
英文摘要	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.; 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.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	Swedish 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]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79551]
专题	金属研究所_中国科学院金属研究所
通讯作者	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.
推荐引用方式 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.