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Effects of heating rate on the alloy element partitioning and mechanical properties in equiaxed alpha-beta Ti-6Al-4V alloy
Zhang, Jinhu1,3; Ju, Hongtao1,2,3; Xu, Haisheng1,2,3; Yang, Liang1,3; Meng, Zhichao1,2,3; Liu, Chen4; Sun, Ping4; Qiu, Jianke1,2,3; Bai, Chunguang1,2,3; Xu, Dongsheng1,2,3; Yang, Rui1,2,3
Corresponding AuthorZhang, Jinhu(jinhuzhang@imr.ac.cn) ; Xu, Dongsheng(dsxu@imr.ac.cn)
2021-12-20
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume94Pages:1-9
AbstractThe effects of heating rate on the alloy element partitioning and mechanical properties during the phase transformation of alpha ->beta in Ti-6Al-4 V alloy under solution treatment have been investigated by the experiments and phase field simulations, which reveal the evolutions of microstructure and compositions at the non-equilibrium state and well verify the experimental results. The specific results indicate that the compositions measured through electron probe micro-analysis (EPMA) under a lower heating rate are close to the equilibrium ones corresponding to the solution temperature. Heating up to the target solution temperature, as the heating rate increases, the Al content decreases and V increases in the primary alpha (alpha(p)) grain with a larger size, the volume fraction of alpha(p) increases and the composition gradient between alpha(p) and beta phases gets steeper. The interrelated relationship among the diffusion, compositions, solution temperature and free energy of the system has been discussed in detail. Moreover, increasing the heating rate (similar to 20.0 K/min) may help to improve the mechanical properties of the alloy by mainly adjusting the alpha(p)/beta(t) volume fractions, alpha(p) particle size and secondary alpha (alpha(s)) size during the process of heating up to the solution temperature. These results may shed some light on the optimization of the knowledge-based heat treatment route. (C) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals.
KeywordHeating rate Alloying element partitioning Microstructure morphology Mechanical properties
Funding OrganizationNa-tional Natural Science Foundation of China ; Doctoral Scientific Research Foundation of Liaoning Province ; Special Project on Information Technology of the Chinese Academy of Sciences
DOI10.1016/j.jmst.2021.02.061
Indexed BySCI
Language英语
Funding ProjectNa-tional Natural Science Foundation of China[51701219] ; Doctoral Scientific Research Foundation of Liaoning Province[20180540133] ; Special Project on Information Technology of the Chinese Academy of Sciences[XXH13506-304]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000733965000001
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167250
Collection中国科学院金属研究所
Corresponding AuthorZhang, Jinhu; Xu, Dongsheng
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
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
4.Shenyang Res Inst Chem Ind Co Ltd, Safety Evaluat Ctr, Shenyang 110141, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jinhu,Ju, Hongtao,Xu, Haisheng,et al. Effects of heating rate on the alloy element partitioning and mechanical properties in equiaxed alpha-beta Ti-6Al-4V alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,94:1-9.
APA Zhang, Jinhu.,Ju, Hongtao.,Xu, Haisheng.,Yang, Liang.,Meng, Zhichao.,...&Yang, Rui.(2021).Effects of heating rate on the alloy element partitioning and mechanical properties in equiaxed alpha-beta Ti-6Al-4V alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,94,1-9.
MLA Zhang, Jinhu,et al."Effects of heating rate on the alloy element partitioning and mechanical properties in equiaxed alpha-beta Ti-6Al-4V alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 94(2021):1-9.
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