Magnetic pulse welding ( MPW) is employed to realize the solid-phase welding of stainless steel plate to copper and aluminum plates. By changing parameters, such as the thickness of and the gap between welded plates, their influences on welding quality are studied. Microscopic analysis techniques including confocal laser scanning microscope, scanning electron microscope and energy disperse spectroscopy are adopted to compare the mi-croscopic structure and performance of weld interface in different sample parts. The results show that the microscop-ic features of weld interfaces vary significantly with different parameters of welded parts. With the increase of the thickness of and the gap between welded plates, the wave size and the thickness of transition zone increase, leading to an improved welding quality.%采用磁脉冲焊接技术,实现不锈钢板与铜板和不锈钢板与铝板的固相焊接.通过改变焊件的厚度和板间距等参数,研究其对焊接质量的影响.采用激光共聚焦显微镜﹑扫描电镜和能谱分析等微观分析方法,对不同样件焊接界面的微观结构和性能进行对比.结果表明,焊件的不同参数的焊接界面微观特征差异较大.随着板件厚度和板间距的增大,焊接界面波形尺寸和过渡区厚度显著增加,焊接质量提高.
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