铜-镍中间层对钛/钢激光焊接头组织与性能的影响
周自宝1
作者信息
- 1. 芜湖职业技术学院 现代物流智造学院,安徽 芜湖 241000
- 折叠
摘要
文章采用添加铜-镍作为中间层的激光热导焊工艺制备钛/钢搭接焊接头,通过改变激光功率对焊接接头组织与性能的变化进行研究.研究表明,铜-镍中间层的加入改变了钛/钢激光焊接熔池的组织形貌以及元素分布情况,通过SEM、EDS、XRD等对熔池各区域检测分析,发现在靠近钛母材一侧形成了 Ti-Ni、Ti-Cu等新相,有效抑制了 Fe-Ti二元脆性相的产生,通过力学实验发现激光功率为2900W时,钛/钢焊接接头的力学性能最好,最大剪切力为1845.02N,说明铜-镍中间层的添加改善了钛/钢异种金属的焊接性.
Abstract
In this paper,the laser thermal conductivity welding process was used to prepare titanium/steel lap welded joints using Cu-Ni interlayer.The changes in the microstructure and properties of the welded joints were studied by changing the laser power.The research shows that the addition of Cu-Ni interlayer changed the microstructure and element distribution of titanium/steel laser welding pool.Through SEM,EDS and XRD,it was found that new phases such as Ti-Ni and Ti-Cu were formed on the side near the titanium base material,which effectively inhibited the formation of Fe-Ti binary brittle phase.The mechanical experiments show that the mechanical properties of titanium/steel welded joints are the best when the laser power is 2900W,and the maximum shear force is 1845.02N,indicating that the addition of Cu-Ni interlayer improves the weldability of titanium/steel dissimilar metals.
关键词
钛/钢异种金属/激光焊接/中间层/组织与性能Key words
titanium/steel dissimilar metals/laser welding/interlayer/microstructure and properties引用本文复制引用
基金项目
安徽省教育厅高校自然科学研究重大项目(KJ2020ZD72)
安徽省教育厅高等学校省级质量工程项目(2022cxtd168)
安徽省教育厅高校自然科学研究重点项目(2022AH052190)
出版年
2024
NETL
NSTL
万方数据