采用Yb:YAG盘式激光器进行3 mm厚1060铝合金-T2紫铜异种金属激光深熔钎焊试验，并用显微硬度测试以及静载拉伸试验对接头的力学性能进行评价。由于焊缝中晶粒细小且含有硬度较高的Al2Cu以及Al2Cu3金属间化合物，其显微硬度要高于铝、铜母材。接头的抗拉强度可以达到铝母材的94%以上，拉伸试验的结果具有一定随机性，其中试样最大的抗拉强度为100.6 MPa，断裂发生在铝合金母材；断裂在焊缝界面处的试样的抗拉强度为94.5 MPa。由于在过渡层内存在硬度和脆性较大的金属间化合物过渡层，与焊缝其他部分存在硬度梯度，在拉伸过程中过渡层处容易出现裂纹，形成断裂。

1060 aluminum alloy and T2 copper with the thickness of 3 mm are joined by means of laser penetration-brazing (LPB) with a Yb:YAG disc laser. The mechanical properties of the joint are measured by microhardness and tensile tests. The microhardness of the weld is higher than that of aluminum and copper base metals, respectively, due to the formation of fine grains and hard Al2Cu and Al2Cu3 intermetallic compounds. The results of the tensile tests for welded samples are variational under the same parameters. The maximum failure strength for tensile test is 100.6 MPa. The failure occurres at aluminum side. The minimum failure strength is 94.5 MPa. The failure happens close to the interface due to the hardness gradient and brittle intermetallic compounds.