采用Cu作中间层对工业纯钛和1Cr 18Ni9不锈钢进行了脉冲加压扩散连接.在连接温度850℃,脉冲压力8～20 MPa工艺条件下,在120～180 s时间内即实现了钛与不锈钢的有效连接,与传统扩散焊相比连接时间大幅缩短.在Ti/Cu界面生成了大量的Ti-Cu金属间化合物;而在Cu/不锈钢界面只生成了Cu在奥氏体不锈钢中的固溶体,Cu中间层有效地阻隔了Ti与不锈钢之间的扩散和反应.在连接时间为120 s时得到了最大的连接强度346 MPa.在拉伸载荷下,接头沿Ti/Cu界面发生脆性断裂.脉冲加压扩散连接能在一定程度上降低界面金属间化合物对接头性能的有害作用,提高接头强度,但不能完全消除界面金属间化合物对接头的不利影响.
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