摘要
采用4种成分的银基钎料制备了钛合金/不锈钢钎焊接头,用力学性能试验、金相试验、扫描电镜分析及电子探针分析方法,测量了钎缝强度,分析了断口形貌和钎缝界面组织。研究表明:不锈钢/Ag95CuNiLi/钛合金钎缝强度可达220 MPa,在不锈钢/Ag95CuNiLi扩散区形成了脆性相;不锈钢/Ag88Al10MnSi/钛合金钎缝强度为242 MPa,不锈钢/Ag88Al10MnSi一侧的钎缝区易形成裂纹;不锈钢/Ag85Al8Sn/钛合金钎缝强度只有123 MPa;不锈钢/Ag85Al8SnNi/钛合金钎缝强度可达280 MPa,钎料与母材冶金结合较好。
Four kinds of silver base brazing materials were adopted for fabricating brazing joints of titanium alloy and stainless steel. The mechanical properties of brazing metal at contact face was measured and the fracture morphology and structure of interface were studied by mechanical test, metallographic examina- tion, SEM analysis and electron probing analysis. The result shows that the strength of brazing metal at stainless steel/Ag95CuLi/Titanium alloy was 220 MPa, 242 MPa at stainless steel/Ag88All 0MnSi/Titanium alloy, 123 MPa at stainless steel/Ag85Al8Sn/Titanium alloy, and 280 MPa at stainless steel/Ag85Al8SnNi/ Titanium alloy. The fragile phase was easy formed in the diffusion part of stainless steel/Ag95CuLi, and cracking in the stainless steel/Ag88Al10MnSi. And there is a wonderful coalescence on metallurgy between the brazing materials and titanium alloy or stainless steel.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2008年第1期61-65,共5页
Nuclear Power Engineering
关键词
钎料
钎缝强度
界面组织
Brazing filler, Joint intensity, Structure of interface
