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Simultaneous improvement in strength and plasticity of Ti-24Nb-4Zr-8Sn manufactured by selective laser melting
Yang, C. L.1,3; Zhang, Z. J.1; Li, S. J.1; Liu, Y. J.2; Sercombe, T. B.2; Hou, W. T.1; Zhang, P.1; Zhu, Y. K.1; Hao, Y. L.1; Zhang, Z. F.1; Yang, R.1
Corresponding AuthorLi, S. J.(shjli@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2018-11-05
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume157Pages:52-59
AbstractThe strength and plasticity of metallic materials usually exhibit a trade-off relation. This study reports a simultaneous improvement in the ultimate tensile strength (UTS) and uniform elongation (UE) of Ti-24Nb-4Zr-8Sn (Ti2448) fabricated by selective laser melting (SLM), relative to those produced via forging. Detailed microstructural characterization reveals that the outstanding tensile property may result from the bi-model structure that forms during the rapid cooling associated with SLM. Coarse grains are surrounded by fine grains within the melt pool, which causes a back stress during tension. The back stress provides additional strain-hardening capacity, which postpones the initiation of necking and then leads to the simultaneous improvement of the strength and plasticity (SISP) of the Ti2448 alloy. Furthermore, the tensile property of the SLM-fabricated sample is anisotropic which is strongly related to the irregular shape of the melt pool. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordSelective laser melting Strength and plasticity Strain hardening Bi-model structure
Funding OrganizationChinese MoST ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
DOI10.1016/j.matdes.2018.07.036
Indexed BySCI
Language英语
Funding ProjectChinese MoST[2017YFC1104901] ; Chinese MoST[2016YFC1102601] ; National Natural Science Foundation of China[51101162] ; National Natural Science Foundation of China[51201165] ; National Natural Science Foundation of China[51331007] ; National Natural Science Foundation of China[51631007] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC031]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000443826600005
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129415
Collection中国科学院金属研究所
Corresponding AuthorLi, S. J.; Zhang, Z. F.
Affiliation1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
2.Univ Western Australia, Sch Mech & Chem Engn, Crawley, WA 6009, Australia
3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yang, C. L.,Zhang, Z. J.,Li, S. J.,et al. Simultaneous improvement in strength and plasticity of Ti-24Nb-4Zr-8Sn manufactured by selective laser melting[J]. MATERIALS & DESIGN,2018,157:52-59.
APA Yang, C. L..,Zhang, Z. J..,Li, S. J..,Liu, Y. J..,Sercombe, T. B..,...&Yang, R..(2018).Simultaneous improvement in strength and plasticity of Ti-24Nb-4Zr-8Sn manufactured by selective laser melting.MATERIALS & DESIGN,157,52-59.
MLA Yang, C. L.,et al."Simultaneous improvement in strength and plasticity of Ti-24Nb-4Zr-8Sn manufactured by selective laser melting".MATERIALS & DESIGN 157(2018):52-59.
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