Microstructure and mechanical properties of lightweight Ti3Zr1.5NbVAlx (x=0, 0.25, 0.5 and 0.75) refractory complex concentrated alloys

doi:10.1016/j.jmst.2022.05.005

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	Microstructure and mechanical properties of lightweight Ti3Zr1.5NbVAlx (x=0, 0.25, 0.5 and 0.75) refractory complex concentrated alloys
	Zeng, Shuai 1,2,3; Zhou, Yongkang 1,2,3; Li, Huan 1,2,3; Zhang, Hongwei 1,3; Zhang, Haifeng 1,3; Zhu, Zhengwang 1,3
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-12-10
卷号	130 页码:64-74
关键词	Refractory complex concentrated alloys Microstructure Mechanical properties Strengthening mechanisms Deformation behavior
ISSN号	1005-0302
DOI	10.1016/j.jmst.2022.05.005
通讯作者	Zhu, Zhengwang(zwzhu@imr.ac.cn)
英文摘要	Combining high strength and good ductility is an urgent requirement for traditional structural materials, but yet a challenge. Newly emerging ductile Ti3Zr1.5NbVAlx (x = 0, 0.25, 0.5, 0.75) refractory complex concentrated alloys (RCCAs) with high specific strength were designed and synthesized via vacuum arc-melting. Alloying effects of Al on microstructure and mechanical properties were systematically investigated. It was found that the phase composition in this alloy system changes from the single disordered body-centered cubic (BCC) phase to a nano-scale mixture of co-continuous disordered BCC and ordered B2 phases with the increase of Al concentration. This structure transition results in a remarkable increase in the yield strength of the RCCAs, i.e., from 790 to 1118 MPa, leading to a superior specific yield strength of 199.4 MPa cm(3) g(-1) for the Al0.75 alloy, meanwhile, the tension plasticity maintained at similar to 10%. TEM observation demonstrates that cell-forming structure and HDDWs induced by wave slip play a crucial role of considerable plasticity in Al0.25 alloy, whereas in Al0.5 alloy, microbands induced by planar slip dominant deformation behavior. The current work is important not only for providing novel high strength and tough structural materials with low density, but also sheds light on designing highperformance lightweight alloys with tunable microstructure. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Key Research and Development Program[2018YFB0703402] ; National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LY-JSC023]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000810934000007
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174386]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhu, Zhengwang
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Shuai,Zhou, Yongkang,Li, Huan,et al. Microstructure and mechanical properties of lightweight Ti3Zr1.5NbVAlx (x=0, 0.25, 0.5 and 0.75) refractory complex concentrated alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,130:64-74.
APA	Zeng, Shuai,Zhou, Yongkang,Li, Huan,Zhang, Hongwei,Zhang, Haifeng,&Zhu, Zhengwang.(2022).Microstructure and mechanical properties of lightweight Ti3Zr1.5NbVAlx (x=0, 0.25, 0.5 and 0.75) refractory complex concentrated alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,130,64-74.
MLA	Zeng, Shuai,et al."Microstructure and mechanical properties of lightweight Ti3Zr1.5NbVAlx (x=0, 0.25, 0.5 and 0.75) refractory complex concentrated alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 130(2022):64-74.