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Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture

文献类型：期刊论文

作者Qi, Min1,2; Huang, Sensen2,3; Ma, Yingjie1,2,3; Youssef, Sabry S.1,2; Zhang, Ruixue4; Qiu, Jianke1,2,3; Lei, Jiafeng1,2,3; Yang, Rui1,2,3
刊名JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
出版日期2021-07-01
卷号13页码:1159-1168
关键词Titanium alloy Selective laser melting Laser metal deposition Post heat-treatment Recrystallization Grain growth
ISSN号2238-7854
DOI10.1016/j.jmrt.2021.05.057
通讯作者Ma, Yingjie(yjma@imr.ac.cn) ; Lei, Jiafeng(jflei@imr.ac.cn)
英文摘要Columnar 13 grains are widely present in titanium alloys fabricated by Additive Manufacturing (AM), which leads to significant anisotropy in mechanical properties. An outstanding challenge is to facilitate the columnar to equiaxed transition (CET) of the prior 13 grains. In this research, CET and the underlying grain growth mechanism during 13 heat treatment in Ti-5Al-5Mo-5V-1Cr-1Fe (Ti55511) alloy manufactured by selected laser melting (SLM) and laser metal deposition (LMD) were investigated. For the first time, the quasi-in-situ observation was employed in the AM near 13 titanium alloys by the electron backscatter diffraction technique to analyze morphology, crystal orientation and substructure evolution, especially in the situation of bamboo-like microstructure with columnar grains and equiaxed grains distributed layer by layer. It was found that the prior 13 grains enriched low-angle grain boundaries (LAGB) are in a high stored strain energy state in as-deposited SLM Ti55511 leading to a recrystallized nucleation-and-growth process during heat treatment, while the prior 13 grains containing a small amount or even no LAGB are in a relatively lower stored strain energy state in as-deposited LMD Ti55511 resulting in recrystallization and grain growth processes. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22010101] ; National Key Research and Development Program of China[2016YFC0304201] ; National Key Research and Development Program of China[2016YFC0304206] ; National Natural Science Foundation of China[51871225] ; Youth Innovation Promotion Association CAS and Liaoning Revitalization Talents Program[XLYC1907005]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000677666500004
出版者ELSEVIER
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS and Liaoning Revitalization Talents Program
源URL[http://ir.imr.ac.cn/handle/321006/159643]  
专题金属研究所_中国科学院金属研究所
通讯作者Ma, Yingjie; Lei, Jiafeng
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab, Innovat Grp Marine Engn Mat & Corros Control, Zhuhai 519080, Peoples R China
4.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
推荐引用方式
GB/T 7714		 Qi, Min,Huang, Sensen,Ma, Yingjie,et al. Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2021,13:1159-1168.
APA Qi, Min.,Huang, Sensen.,Ma, Yingjie.,Youssef, Sabry S..,Zhang, Ruixue.,...&Yang, Rui.(2021).Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,13,1159-1168.
MLA Qi, Min,et al."Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 13(2021):1159-1168.

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来源：金属研究所

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