Influence of alloy element partitioning on strength of primary alpha phasein Ti-6Al-4V alloy

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	Influence of alloy element partitioning on strength of primary alpha phasein Ti-6Al-4V alloy
	Zeng, LR; Chen, HL; Li, X; Lei, LM; Zhang, GP; Zhang, GP (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2018-05-01
卷号	34 期号:5 页码:782-787
关键词	Mechanical-properties Titanium-alloys Electronic-structure Ti-alloy Nanoindentation Behavior Microstructure Deformation Simulations Orientation
ISSN号	1005-0302
英文摘要	The partitioning effect of Al (alpha-phase stabilizer) and V elements (beta-phase stabilizer) on strength of the primary alpha phases in the alpha/beta Ti-6Al-4V alloy with the bimodal microstructure was investigated. It was found that partitioning of Al and V elements took place in the Ti-6Al-4V alloy during the recrystallization process, leading to the variation of the content of Al and V elements in the primary alpha phases with changing the volume fraction of the primary alpha phase. Nanoindentation tests reveal a general trend that the strength of the primary alpha phases increases with decreasing the volume fraction of the primary alpha phases, and such trend is independent on the loading direction relative to the c-axis of the alpha phase. The enhanced strength is attributed to the increase of the content of Al element in the primary alpha phase, but it is not dominated evidently by the change of the V content. The solid solution strengthening contributed from both the elastic strain introduced by the solute atoms and the variation of the density of states was estimated theoretically. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; The partitioning effect of Al (alpha-phase stabilizer) and V elements (beta-phase stabilizer) on strength of the primary alpha phases in the alpha/beta Ti-6Al-4V alloy with the bimodal microstructure was investigated. It was found that partitioning of Al and V elements took place in the Ti-6Al-4V alloy during the recrystallization process, leading to the variation of the content of Al and V elements in the primary alpha phases with changing the volume fraction of the primary alpha phase. Nanoindentation tests reveal a general trend that the strength of the primary alpha phases increases with decreasing the volume fraction of the primary alpha phases, and such trend is independent on the loading direction relative to the c-axis of the alpha phase. The enhanced strength is attributed to the increase of the content of Al element in the primary alpha phase, but it is not dominated evidently by the change of the V content. The solid solution strengthening contributed from both the elastic strain introduced by the solute atoms and the variation of the density of states was estimated theoretically. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Natural Science Foundation of China [51371180, 51571199]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79331]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, GP (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Zeng, LR,Chen, HL,Li, X,et al. Influence of alloy element partitioning on strength of primary alpha phasein Ti-6Al-4V alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(5):782-787.
APA	Zeng, LR,Chen, HL,Li, X,Lei, LM,Zhang, GP,&Zhang, GP .(2018).Influence of alloy element partitioning on strength of primary alpha phasein Ti-6Al-4V alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(5),782-787.
MLA	Zeng, LR,et al."Influence of alloy element partitioning on strength of primary alpha phasein Ti-6Al-4V alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.5(2018):782-787.