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.