当前位置: X-MOL 学术Mater. Sci. Eng. A › 论文详情
Flash-butt welded Ti6242 joints preserved base-material strength and ductility
Materials Science and Engineering: A ( IF 4.081 ) Pub Date : 2020-01-03 , DOI: 10.1016/j.msea.2020.138915
Pingwei Xu; Lei Zhou; Moliu Han; Zhijian Wei; Yu Liang

Microstructure and mechanical properties of flash-butt welded two-phase Ti–6Al–2Sn–4Zr–2Mo (Ti6242) alloy are investigated. High ductility that is at least comparable to that of the matrix and extra strain hardening are achieved in welded joints because of the formation of a particular semi-equiaxed structure in the double-affected zone (DAZ). Also, no strength loss is observed, and this is attributed to a uniform hardness distribution in a narrower welding zone. The soft DAZ, which is sandwiched between the welding seam and stress-affected zone, enables better deformation compatibility among these zones, and weakens their stress concentration. Furthermore, such semi-equiaxed structure effectively suppresses the formation of dense slip bands and crack nucleation and provides a strong barrier against its propagation. This work provides a new understanding of this particular microstructure, which is expected to have a higher combination of strength and ductility in Ti alloys.
更新日期:2020-01-04

 

全部期刊列表>>
Springer Nature 2019高下载量文章和章节
化学/材料学中国作者研究精选
《科学报告》最新环境科学研究
ACS材料视界
自然科研论文编辑服务
中南大学国家杰青杨华明
剑桥大学-
中南大学
材料化学和生物传感方向博士后招聘
课题组网站
X-MOL
北京大学分子工程苏南研究院
华东师范大学分子机器及功能材料
中山大学化学工程与技术学院
试剂库存
天合科研
down
wechat
bug