摘要
采用瞬时液相扩散连接双温工艺对45MnMoB地质钻杆进行了焊接,氩气保护,非晶箔合金作中间层;利用扫描电镜、万能材料试验机和电子探针等分析了连接接头的显微组织、力学性能和元素分布。结果表明:接头处形成了跨界面连续生长的晶粒,其组织与母材组织相同;传统瞬时液相扩散工艺连接的组织性能不如双温工艺的好,1 230/1 250℃双温工艺获得的接头抗拉强度为890 MPa,弯曲角为180°。
The geological drill pipes of 45MnMoB were joined by transient liquid-phase(TLP) two-step heating bonding process using amorphous filler in argon atmosphere.The microstructure and properties as well as the element distribution of the TLP bonding joints were investigated by means of SEM,material testing and EPMA.The results show that transient liquid phase bonding produced a homogenous joint with microstructure and composition equivalent to those of the base metal.The microstructure and properties of joint w...
出处
《机械工程材料》
CAS
CSCD
北大核心
2008年第5期52-54,57,共4页
Materials For Mechanical Engineering
关键词
地质钻杆
瞬时液相扩散连接
双温工艺
geological drill pipe
transient liquid phase（TLP） bonding
two-step heating
