Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment

doi:10.1016/j.jallcom.2022.165235

IMR OpenIR

	Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment
	Lu, S. L.1,2; Zhang, Z. J.1,2; Liu, R.1; Qu, Z.1,2; Wang, B.1; Zhou, X. H.1; Eckert, J.3; Zhang, Z. F.1,2
通讯作者	Zhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2022-09-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	914 页码:13
摘要	Prior beta grain evolution and phase transformation of selective laser melted (SLM) Ti6Al4V alloy after subtransus and supertransus solution heat treatments are investigated. A method based on the special angle grain boundaries (in the range of 15-55 degrees and 70-85 degrees) is proposed for a clear and straightforward description of the prior beta mesostructure. Post solution treatments below beta transus retain the prior beta grains and alter the fully martensitic microstructure into a mixture of alpha and alpha'/beta phases. A non-traditional "bimodal structure" consisting of alpha(P) and alpha(S)' phases is produced by subtransus treatments at a relatively high temperature. While treatments above beta transus lead to the growth of prior beta grains and transform the martensitic alpha' phases into beta phases first, and then back into alpha' martensites again during quenching, leading to a new martensitic microstructure. The microhardness is determined by the alpha lath thickness and the amount of alpha' martensite, and the latter is more predominant. (c) 2022 Elsevier B.V. All rights reserved.
关键词	Selective laser melting Ti6Al4V alloy Heat treatment Microstructure Phase transformation
资助者	Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China (NSFC) ; IMR Innovation Foundation ; KC Wong Education Foundation
DOI	10.1016/j.jallcom.2022.165235
收录类别	SCI
语种	英语
资助项目	Youth Innovation Promotion Association CAS[2021192] ; National Natural Science Foundation of China (NSFC)[51871223] ; National Natural Science Foundation of China (NSFC)[52130002] ; IMR Innovation Foundation[2021-PY05] ; KC Wong Education Foundation[GJTD-2020-09]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000804093800001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：19[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/321006/174138
专题	中国科学院金属研究所
通讯作者	Zhang, Z. J.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria
推荐引用方式 GB/T 7714	Lu, S. L.,Zhang, Z. J.,Liu, R.,et al. Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,914:13.
APA	Lu, S. L..,Zhang, Z. J..,Liu, R..,Qu, Z..,Wang, B..,...&Zhang, Z. F..(2022).Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment.JOURNAL OF ALLOYS AND COMPOUNDS,914,13.
MLA	Lu, S. L.,et al."Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment".JOURNAL OF ALLOYS AND COMPOUNDS 914(2022):13.