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

doi:10.1016/j.jallcom.2022.165235

CORC > 金属研究所 > 中国科学院金属研究所

	Prior beta grain evolution and phase transformation of selective laser melted Ti6Al4V alloy during heat treatment
	Lu, S. L.2,3; Zhang, Z. J.2,3; Liu, R.3; Qu, Z.2,3; Wang, B.3; Zhou, X. H.3; Eckert, J.1; Zhang, Z. F.2,3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-09-05
卷号	914 页码:13
关键词	Selective laser melting Ti6Al4V alloy Heat treatment Microstructure Phase transformation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2022.165235
通讯作者	Zhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000804093800001
资助机构	Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China (NSFC) ; IMR Innovation Foundation ; KC Wong Education Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174137]
专题	金属研究所_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.Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
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.