Effects of surface roughness on interfacial dynamic recrystallization and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo alloy joints produced by hot-compression bonding

doi:10.1016/j.jmst.2021.03.085

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	Effects of surface roughness on interfacial dynamic recrystallization and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo alloy joints produced by hot-compression bonding
	Xie, Bijun 1,2; Yu, Zhenxiang 1,2,3; Jiang, Haiyang 1,2,3; Xu, Bin 1,2; Wang, Chunyang 2; Zhang, Jianyang 1,2; Sun, Mingyue 1,2; Li, Dianzhong 2; Li, Yiyi 1,2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-01-10
卷号	96 页码:199-211
关键词	Surface roughness Rotational dynamic recrystallization EBSD Geometrically necessary dislocations Mechanical properties
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.03.085
通讯作者	Sun, Mingyue(mysun@imr.ac.cn)
英文摘要	The influence of surface roughness on the interfacial dynamic recrystallization kinetics and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo hot-compression bonding joints was systematically investigated. It is found that for the bonding interface of rough surfaces, elongated fine grains are formed at the bonding interface due to shear deformation of the interfacial area. As the surface roughness increases, the proportion of elongated grains drastically decreases as they further reorient to form equiaxed grains along the bonding interface of rougher surfaces resulting from severe incompatible deformation of the interface area. Meanwhile, high-density geometrically necessary dislocations accumulate around the interfacial recrystallization area to accommodate the incompatible strain and lattice rotation. A rotational dynamic recrystallization mechanism is thereby proposed to rationalize the formation of fine interfacial recrystallization grains during bonding of rough surfaces. In contrast to that of rough surfaces, bonding interface of polished surfaces exists in the form of straight interface grain boundaries without fine grains under the same deformation conditions. While with the increase of deformation strain, small grain nuclei form along the bonding interface, which is associated with discontinuous dynamic recrystallization assisted by strain-induced boundary migration of interface grain boundaries. Moreover, the bonding joints of rough surfaces show lower elongation compared with that of polished surfaces. This is because the formation of heterogeneous fine grains with low Schmid factor along the bonding interface of rough surfaces, leading to worse compatible deformation capability and thereby poor ductility of bonding joints. (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[2018YFA0702900] ; Postdoctoral Science Foundation of China[2020M681004] ; National Natural Science Foundation of China[51774265] ; National Science and Technology Major Project of China[2019ZX06004010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
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:000737286400005
资助机构	National Key Research and Development Program ; Postdoctoral Science Foundation of China ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173828]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Mingyue
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Coll Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Xie, Bijun,Yu, Zhenxiang,Jiang, Haiyang,et al. Effects of surface roughness on interfacial dynamic recrystallization and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo alloy joints produced by hot-compression bonding[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,96:199-211.
APA	Xie, Bijun.,Yu, Zhenxiang.,Jiang, Haiyang.,Xu, Bin.,Wang, Chunyang.,...&Li, Yiyi.(2022).Effects of surface roughness on interfacial dynamic recrystallization and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo alloy joints produced by hot-compression bonding.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,96,199-211.
MLA	Xie, Bijun,et al."Effects of surface roughness on interfacial dynamic recrystallization and mechanical properties of Ti-6Al-3Nb-2Zr-1Mo alloy joints produced by hot-compression bonding".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 96(2022):199-211.