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Formation mechanism of alpha lamellae during beta ->alpha transformation in polycrystalline dual-phase Ti alloys

文献类型：期刊论文

作者Sun, Jia1,3; Qi, Min1,4; Zhang, Jinhu1; Li, Xuexiong1; Wang, Hao1,2; Ma, Yingjie1,4; Xu, Dongsheng1,4; Lei, Jiafeng1,4; Yang, Rui1,4
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
出版日期2021-04-30
卷号71页码:98-108
关键词Lamellae Side branches Ti-6Al-4V Interfacial energy anisotropy Phase field model
ISSN号1005-0302
DOI10.1016/j.jmst.2020.02.093
通讯作者Wang, Hao(haowang7@usst.edu.cn) ; Xu, Dongsheng(dsxu@imr.ac.cn)
英文摘要Phase field simulations incorporating contributions from chemical free energy and anisotropic interfacial energy are presented for the beta ->alpha transformation in Ti-6Al-4 V alloy to investigate the growth mechanism of alpha lamellae of various morphologies from undercooled beta matrix. The alpha colony close to realistic microstructure was generated by coupling the Thermo-Calc thermodynamic parameters of alpha and beta phases with the phase field governing equations. The simulations show that alpha lamellar side branches with feathery morphology can form under a certain combination of interfacial energy anisotropy and temperature. alpha lamellae tend to grow slowly at high heat treatment temperature and become wider and thicker as temperature increase from 800 to 900 degrees C provided that the interfacial energy anisotropy ratio k(x): k(y) was set as 0.1: 0.6. Besides, higher interfacial energy anisotropy can accelerate the formation of alpha lamellae, and the equilibrium shape of alpha lamellae changes from rod to plate as the interface energy anisotropy ratio kx: ky vary from 0.1: 0.4 to 0.1: 0.8 under 820. C. Experiments were conducted to study the alpha lamellar side branches in Ti-6Al-4 V (Ti-6.01Al-3.98 V, wt.%) and Ti-4211 (Ti-4.02Al-2.52V1.54Mo-1.03Fe, wt.%) alloys with lamellar microstructure. Electron backscatter diffraction (EBSD) results show that alpha lamellar side branches and their related lamellae share the same orientation. The predicted temperature range for alpha lamellar side branches formation under various interfacial energy anisotropy is consistent with experimental results. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目National Key Research and Development Program of China[2016YFB0701304] ; Natural Science Foundation of China[51671195] ; Natural Science Foundation of China[51871225] ; Chinese Academy of Sciences[QYZDJ-SSW-JSC031-01] ; Chinese Academy of Sciences[XDC01040100] ; Chinese Academy of Sciences[XXH13506-304]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000631843700011
出版者JOURNAL MATER SCI TECHNOL
资助机构National Key Research and Development Program of China ; Natural Science Foundation of China ; Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/161436]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Hao; Xu, Dongsheng
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Shanghai Sci & Technol, Shanghai 200093, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Jia,Qi, Min,Zhang, Jinhu,et al. Formation mechanism of alpha lamellae during beta ->alpha transformation in polycrystalline dual-phase Ti alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,71:98-108.
APA Sun, Jia.,Qi, Min.,Zhang, Jinhu.,Li, Xuexiong.,Wang, Hao.,...&Yang, Rui.(2021).Formation mechanism of alpha lamellae during beta ->alpha transformation in polycrystalline dual-phase Ti alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,71,98-108.
MLA Sun, Jia,et al."Formation mechanism of alpha lamellae during beta ->alpha transformation in polycrystalline dual-phase Ti alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 71(2021):98-108.

入库方式： OAI收割

来源：金属研究所

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