CuMnNiSi钎料钎焊不锈钢接头组织性能研究
Structure and Property of Stainless Steel Brazed Joint with CuMnNiSi Filler Metal
杨 光， 李 宁， 颜家振， 苑 博
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作者单位：（四川大学 制造科学与工程学院，四川 成都 610065）
中文关键字： 铜基钎料； 钎焊组织； 力学性能
英文关键字：copper filler metal； microstructure； mechanical property
中文摘要：采用新型的Cu-Mn-Ni-Si钎料真空钎焊2Cr13不锈钢，研究了钎焊温度和保温时间对接头组织和室温力学性能的影响。结果表明：钎焊接头组织由钎缝中心区Cu-Mn基固溶体和钎缝界面反应区的(Fe,Ni,Mn)- Si化合物组成。随着钎焊温度的增加，钎缝界面处化合物层厚度减小，Cu-Mn基固溶体相应增多，接头室温剪切强度随之增加，在钎焊时间15 min、钎焊温度1050 ℃时达到321 MPa。在钎焊温度1000 ℃时，接头室温剪切强度随着钎焊保温时间的延长先增加后降低，在钎焊保温时间30 min时取得最大值305 MPa。
英文摘要：The effects of brazing temperature and holding time on the microstructure and mechanical property at room-temperature of the brazed stainless steel joint with Cu-Mn-Ni-Si filler metal in vacuum were studied. The results show that the brazed joint is made up of Cu-Mn based solid solution in the middle area of the brazing seam and （Fe，Ni，Mn）-Si intermetallic phase in the reaction area near the interface. The volume of intermetallic phase decreases and joint clearance is primarily occupied by Cu-Mn based solid solution with the increase of brazing temperature, the shear strength of the brazed joint at room-temperature increases with the increase of the brazing temperature and reaches 321 MPa when brazing holding time is 15 min and brazing temperature is 1050 ℃. The shear strength of the brazed joint at room-temperature increases first and then decreases with the increase of the brazing holding times, and reaches 305 MPa when the brazing holding time is 30 min.