Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping

doi:10.1016/j.jmst.2020.10.043

CORC > 金属研究所 > 中国科学院金属研究所

	Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping
	Pang, Jingyu 1,2; Zhang, Hongwei 1,3; Zhang, Long 1,3; Zhu, Zhengwang 1,3; Fu, Huameng 1,3; Li, Hong 1,3; Wang, Aimin 1,3; Li, Zhengkun 1,3; Zhang, Haifeng 1,3
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-07-10
卷号	78 页码:74-80
关键词	Boron-doping TiZrNb Grain refinement Strain-hardening capacity Deformation mechanism
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.10.043
通讯作者	Zhang, Hongwei(hongweizhang@imr.ac.cn) ; Zhang, Haifeng(hfzhang@imr.ac.cn)
英文摘要	Body-centered cubic (BCC) multi-principal element alloys (MPEAs) have intrinsic high strength but poor ductility, which greatly limits their potential applications. Here we present the boron-doping strategy to enhance the strength and ductility of TiZrNb MPEAs simultaneously. The yield strength and ductility of the TiZrNb MPEA with boron addition of 500 ppm are increased by 19.0 % and 48.7 % compared to the boron-free TiZrNb MPEA, respectively. Boron-doping induced high efficiency in grain refinement from similar to 96.0 mu m to similar to 16.2 mu m is the main factor for strengthening. Dislocation dominated deformation mechanism involving cross slip and dislocation pining in the TiZrNb containing 500 ppm boron serves to enhance the strain-hardening capacity, resultant the enhancement of ductility from 7.8 % to 11.6 %. While the planar slip of dislocations is the dominated deformation mechanism for the boron-free TiZrNb. (C) 2021 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] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Liao Ning Revitalization Talents Program[XLYC1802078] ; Liao Ning Revitalization Talents Program[XLYC1807062] ; Liaoning Key Research and Development Program[2020JH2/10100013]
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:000652023600007
资助机构	National Key Research and Development Program ; Chinese Academy of Sciences ; Liao Ning Revitalization Talents Program ; Liaoning Key Research and Development Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161464]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Hongwei; Zhang, Haifeng
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Ji Hua Lab Foshan, Foshan, Peoples R China
推荐引用方式 GB/T 7714	Pang, Jingyu,Zhang, Hongwei,Zhang, Long,et al. Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,78:74-80.
APA	Pang, Jingyu.,Zhang, Hongwei.,Zhang, Long.,Zhu, Zhengwang.,Fu, Huameng.,...&Zhang, Haifeng.(2021).Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,78,74-80.
MLA	Pang, Jingyu,et al."Simultaneous enhancement of strength and ductility of body-centered cubic TiZrNb multi-principal element alloys via boron-doping".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 78(2021):74-80.