Simultaneous improvement in strength and plasticity of Ti-24Nb-4Zr-8Sn manufactured by selective laser melting

doi:10.1016/j.matdes.2018.07.036

IMR OpenIR

	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
通讯作者	Li, S. J.(shjli@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2018-11-05
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	157 页码:52-59
摘要	The 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.
关键词	Selective laser melting Strength and plasticity Strain hardening Bi-model structure
资助者	Chinese MoST ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
DOI	10.1016/j.matdes.2018.07.036
收录类别	SCI
语种	英语
资助项目	Chinese 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研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000443826600005
出版者	ELSEVIER SCI LTD
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/129415
专题	中国科学院金属研究所
通讯作者	Li, S. J.; Zhang, Z. F.
作者单位	1.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
推荐引用方式 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.