铝/钢爆炸复合界面的显微分析  

Micro-analysis of Bonding Interfaces of Explosive Welded Aluminum/Steel Plates

作　　者：王建民[1] 朱锡[1] 刘润泉[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,武汉430033

出　　处：《材料工程》2006年第11期36-39,44,共5页Journal of Materials Engineering

摘　　要：通过金相显微镜与电子探针对铝/钢复合板的界面进行了显微分析。结果表明,铝、钢爆炸复合过程中不易形成波状界面,复合界面呈平直状,界面处金属发生了冶金反应;爆炸焊接过程中,铝/钢复合界面处的基体金属发生了熔化,界面处的晶粒发生了严重的塑性变形,并且在铝/钢直接结合的界面两侧存在着距离约为5μm的扩散。分析认为爆炸焊接的工艺特点及铝、钢的物理性质决定了铝/钢界面的显微特点。并据此探讨了影响铝/钢复合强度的因素。The bonding interfaces of explosive welded aluminum-steel plates were analyzed by means of metallographic microscope and electron probe micro-analyzer（EPMA）. The results indicated that the bonding interfaces of aluminum-steel was of straight shape and brittle layers were produced at the interfaces and in which some micro-cracking were observed. During explosive welding, a thin metal layer near the interfaces was melted with the explosive energy and plastic deformation was found on the grains at the interfaces. A 5μm diffusion distance was found on the both sides of base metals at the direct bonding interfaces. It was analyzed that the characteristics of explosive welding technology and physical characteristics of aluminum and steel decided the micro-structure of the aluminum-steel bonding interfaces. Furthermore, the effects on the bonding strength of aluminum-steel were discussed.

关 键 词：爆炸焊接 显微分析 熔化 扩散 

分 类 号：TG456.6[金属学及工艺—焊接]