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分别对添加1.0、1.5、2.0mm泡沫铜夹层的5052Al-泡沫铜-5052Al“三明治”板进行压印连接,对连接好试件的截面进行直观检测,分析接头成形质量;通过拉伸-剪切试验,分析接头的载荷承载能力和能量吸收能力;对失效后的接头断口进行扫描,从微观层面分析接头失效机理。结果表明,泡沫铜夹层厚度增加导致颈部厚度增加,镶嵌量减少,载荷承载能力相应提高,但对能量吸收能力影响不大,接头失效形式为颈部断裂,微观断裂特征为韧窝断裂。
The 5052Al-foamed copper-5052Al “sandwich” plate with 1.0,1.5,2.0mm foam copper interlayer added was imprinted and connected with each other, the cross section of the test piece was visually inspected and the quality of the joint was analyzed. Shear test to analyze the load carrying capacity and energy absorption capacity of the joint; scanning the fracture of the failed joint, and analyzing the failure mechanism of the joint from the microscopic level. The results show that the increase of the thickness of the foam interlayer causes the increase of the thickness of the neck, the decrease of the inlay amount and the increase of the load carrying capacity, but has little effect on the energy absorption capacity. The failure mode of the joint is the neck fracture and the microscopic fracture is characterized by dimple fracture.