摘要
利用Cu-Sn-Ti-In活性合金钎料,将CBN磨料钎焊至1045钢基体上,对钎焊接头的界面反应、力学性能进行分析研究。结果表明:Cu-Sn-Ti-In合金钎料对CBN磨料表现出良好的润湿性,活性元素Ti扩散到结合界面并形成Ti-B和Ti-N反应生成物,使得CBN磨料与改性合金钎料之间形成化学冶金结合。相比于普通Cu基合金钎料,利用Cu-Sn-Ti-In合金钎料钎焊CBN磨料的力学性能更优。焊后CBN磨料底部受残余压应力,顶部受残余拉应力,且最大残余应力值小于150 MPa。
CBN abrasives were brazed onto 1045 steel substrates using the active Cu-Sn-Ti-In filler alloy.The bonding interface reactions,mechanical properties of the brazed joint were studied.The results show that the Cu-Sn-Ti-Infiller alloy exhibits good wettability to CBN abrasives,and the active Ti element diffuses to the joint interface and forms TiN and TiB 2 compounds,making the chemical metallurgical combination between CBN abrasives and the modified filler alloy.Compared with common Cu-based alloy,the CBN brazed with the Cu-Sn-Ti-In alloy shows better mechanical properties.The bottom of brazed CBN abrasive is subjected to the residual compressive stress and its top to the residual tensile stress,and the residual stress of brazed CBN is less than 150 MPa.
作者
肖皓中
刘锐
马哲
赵昱博
XIAO Haozhong;LIU Rui;MA Zhe;ZHAO Yubo(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《机械制造与自动化》
2025年第4期43-47,共5页
Machine Building & Automation
基金
江苏省高等学校基础科学(自然科学)研究面上项目(22KJB460003)。
关键词
钎焊
CBN
界面微结构
残余应力
brazing
CBN
interface microstructure
residual stress
