钢铁钒钛2025，Vol.46Issue(4)：66-73,8.DOI:10.7513/j.issn.1004-7638.2025.04.009
TA1钛合金薄板点环扫描激光焊缝成形与组织性能研究
Research on formation and properties of adjustable-ring mode (ARM) laser scanning welding of TA1 titanium alloy thin sheet
摘要
Abstract
A new welding method using adjustable-ring mode(ARM)scanning laser was employed to weld 0.5 mm thick TA1 titanium alloy thin sheets.Effects of process parameters on weld formation,mi-crostructure and mechanical properties were studied.A single factor method was adopted in the experi-ment.One parameter was changed at a time,while other parameters remained unchanged.The values of the process parameters were as follows:the central power Pz=800 W,the ring power Pw=1200 W,the welding speed v=100 mm/s,and the scanning frequency F=300 Hz.When the parameters were changed,the variation ranges are distributed as:the central power Pz=200～800 W,the ring power Pw=1200～1 800 W,the welding speed v=40～100 mm/s,and the scanning frequency F=100～400 Hz.The results show that compared with non-scanning laser welding,the ARM scanning laser leads to broader bead width and larger penetration,which is highly suitable for thin sheet welding.Compared with conven-tional scanning laser welding,the ARM scanning laser not only leads to larger bead width and depth,but also produces smoother bead formation and prettier weld appearance,with smaller stress concentra-tion due to lower weld reinforcement.The microstructure of the ARM scanning laser weld metal con-sists of α phase.The influence of the central power and outer ring power of the ARM laser have insigni-ficant effects on the microstructure,tensile strength and elongation.The tensile strength of the welded joints reaches 95％～96％of the base metal,while the extensibility achieves 54％～60％of the base metal.关键词
钛合金薄板/点环扫描激光/焊缝成形/组织性能Key words
thin sheet titanium alloy/adjustable-ring mode(ARM)scanning laser/weld formation/mi-crostructure and mechanical properties分类
矿业与冶金引用本文复制引用
LIU Ke,YU Tengyi,YANG Peiqing,LI Geng,ZHANG Shuai,GAO Ming..TA1钛合金薄板点环扫描激光焊缝成形与组织性能研究[J].钢铁钒钛,2025,46(4):66-73,8.基金项目
钒钛资源综合利用产业技术创新战略联盟2023年协同项目(PGWX2023026) （PGWX2023026）
湖北省教育厅科学研究计划资助项目(D20222703). （D20222703）
