Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation

doi:10.1016/j.jmst.2020.10.013

CORC > 金属研究所 > 中国科学院金属研究所

	Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation
	Wu, Di 1,2,3; Liu, Libin 1,2; Zeng, Lijun 1,2; Zhu, Wenguang 4; Wang, Wanlin 3; Zhang, Xiaoyong 2; Hou, Junfeng 5; Liu, Baoliang 6; Lei, Jiafeng 7; Zhou, Kechao 1,2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-05-30
卷号	74 页码:78-88
关键词	Pseudo-spinodal mechanism Alloy design CALPHAD Diffusion multiple Strengthening mechanism
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.10.013
通讯作者	Zhang, Xiaoyong(zhangxiaoyong@csu.edu.cn) ; Hou, Junfeng(hou8635@yeah.net)
英文摘要	This study used the pseudo-spinodal mechanism to obtain the ultrafine alpha phase for designing high-strength titanium alloy. Diffusion multiple experiments were designed to find the composition range of TM-xMo-yV alloy (TM: Ti-4.5Al-2Cr-2.5Nb-2Zr-1Sn) for obtaining ultrafine alpha phase. CALPHAD results confirm that when the alloy composition is located near the intersection of the alpha and beta phase free energy curves, the alloy will undergo pseudo-spinodal transformation and obtain the ultrafine alpha phase. The designed TM-6Mo-3V alloy has a yield strength of 1411 MPa and an elongation of 6.5 %. The strength of the alloy depends on the thickness, fraction of the alpha phase and the solid solution strengthening effect of the alloying elements. The deformation mechanism of the alloy is the dislocation slip of the alpha and beta phases and the twin deformation of the alpha phase. The large number of alpha/beta interfaces produced by the fine alpha phase is the main reason for limiting the ductility of the alloy. The use of the pseudo-spinodal mechanism combined with diffusion multiple experiments and CALPHAD is an effective method for designing high-strength titanium alloys. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Key Technologies R&D Program of China[2018YFB0704100] ; National Key Technologies R&D Program of China[2016YFB0701301] ; National Natural Science Foundation of China[51901251] ; National Natural Science Foundation of China[51671218] ; Natural Science Foundation of Hunan Province China[2020JJ5750] ; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000636044000010
资助机构	National Key Technologies R&D Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Hunan Province China ; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/162253]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Xiaoyong; Hou, Junfeng
作者单位	1.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China 2.Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China 3.Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China 4.Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China 5.North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Ningxia, Peoples R China 6.Xian Trianlge Def Inc Co, Xian 710089, Peoples R China 7.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Di,Liu, Libin,Zeng, Lijun,et al. Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,74:78-88.
APA	Wu, Di.,Liu, Libin.,Zeng, Lijun.,Zhu, Wenguang.,Wang, Wanlin.,...&Zhou, Kechao.(2021).Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,74,78-88.
MLA	Wu, Di,et al."Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 74(2021):78-88.