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

doi:10.1016/j.jmrt.2021.05.057

IMR OpenIR

	Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture
	Qi, Min 1,2; Huang, Sensen 2,3; Ma, Yingjie 1,2,3; Youssef, Sabry S.1,2; Zhang, Ruixue 4; Qiu, Jianke 1,2,3; Lei, Jiafeng 1,2,3; Yang, Rui 1,2,3
通讯作者	Ma, Yingjie(yjma@imr.ac.cn) ; Lei, Jiafeng(jflei@imr.ac.cn)
	2021-07-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	13 页码:1159-1168
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/).
关键词	Titanium alloy Selective laser melting Laser metal deposition Post heat-treatment Recrystallization Grain growth
资助者	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
DOI	10.1016/j.jmrt.2021.05.057
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000677666500004
出版者	ELSEVIER
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159644
专题	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.