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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
Corresponding AuthorZhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2022-09-05
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume914Pages:13
AbstractPrior 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.
KeywordSelective laser melting Ti6Al4V alloy Heat treatment Microstructure Phase transformation
Funding OrganizationYouth Innovation Promotion Association CAS ; National Natural Science Foundation of China (NSFC) ; IMR Innovation Foundation ; KC Wong Education Foundation
DOI10.1016/j.jallcom.2022.165235
Indexed BySCI
Language英语
Funding ProjectYouth 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 Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000804093800001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174138
Collection中国科学院金属研究所
Corresponding AuthorZhang, Z. J.; Zhang, Z. F.
Affiliation1.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
Recommended Citation
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.
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