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Columnar to equiaxed transition during 13 heat treatment in a near 13 alloy by laser additive manufacture
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
Corresponding AuthorMa, Yingjie(yjma@imr.ac.cn) ; Lei, Jiafeng(jflei@imr.ac.cn)
2021-07-01
Source PublicationJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN2238-7854
Volume13Pages:1159-1168
AbstractColumnar 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/).
KeywordTitanium alloy Selective laser melting Laser metal deposition Post heat-treatment Recrystallization Grain growth
Funding OrganizationStrategic 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
DOI10.1016/j.jmrt.2021.05.057
Indexed BySCI
Languageen
Funding ProjectStrategic 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 Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000677666500004
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159644
Collection中国科学院金属研究所
Corresponding AuthorMa, Yingjie; Lei, Jiafeng
Affiliation1.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
Recommended Citation
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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