Cr对Ni-P系钎料钎焊不锈钢接头性能的影响
Effect of Cr on Property of Stainless Steel Joint Brazed with Series Ni-P Filler Metal
肖 伟， 李 宁， 赵兴保， 滕 劲
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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：Cr；Ni-P；钎焊温度；铺展性能；剪切强度
英文关键字：Cr； Ni-P； brazing temperature； spreadability； shear strength
中文摘要：研究了钎焊温度对Ni-P系钎料铺展性能及其真空钎焊0Cr13不锈钢接头力学性能的影响。结果表明，Ni-P系钎料铺展面积随钎焊温度的升高而增大，并且相同温度下不含Cr的Ni-P钎料铺展面积大于Ni-Cr-P的铺展面积；钎焊温度从925 ℃升高到1000 ℃过程中，Ni-P、Ni-Cr-P钎料钎焊不锈钢接头的室温剪切强度均增大，并且在相同钎焊工艺下，不含Cr的Ni-P钎料钎焊不锈钢接头室温剪切强度优于Ni-Cr-P钎焊接头强度30~40 MPa；Ni-P系钎料钎焊接头高温强度随温度升高而下降，测试温度超过500 ℃时，相同温度下含Cr的钎料能够提高钎焊接头强度0~30 MPa。
英文摘要：The effects of brazing temperature on spreadability of series Ni-P filler metal and mechanical property of the stainless steel joint brazed with the filler metal were studied. The results show that the spreading area of series Ni-P filler metal increases with the increase of brazing temperature， and the spreading areas of Ni-P filler metal is larger than that of Ni-Cr-P filler metal； the shear strength of the brazed joint at room temperature increases with the increase of temperature from 925℃ to 1000℃， and the shear strength of the stainless steel joint brazed with Ni-P filler metal is superior to that with Ni-Cr-P filler metal by 30~40 MPa in the same brazing technology. The high temperature strength of Ni-P series brazed joints decreases with the increase of testing temperature， the strength of the joint brazed with Ni-P can be improved by 0~30 MPa through adding Cr at the same testing temperature above 500 ℃.