摘要
利用Nd∶YAG激光器实现了5052铝/镀锌钢异种金属板材之间的熔-钎焊连接,并对焊缝成形、接头性能及微观形貌做了分析。分析结果表明,合适的热输入能够有效实现5052铝/镀锌钢异种金属之间的熔-钎焊连接,焊接接头中铝合金母材发生熔化与镀锌钢形成钎焊连接,镀锌钢母材并未发生熔化;焊接接头的抗拉强度为128 N/mm;微观形貌分析表明,在焊缝钎接界面处生成了一层薄金属间化合物层,金属间化合物层的厚度为3～4μm。
The melting-brazing connection of the dissimilar metal 5052 aluminum alloy/galvanized steel was achieved by using the Nd：YAG laser, and the weld formation, joint performance and microstructure of joint was analyzed. The analysis result indicates that, it can achieve successful melting-brazing connection of 5052 aluminum alloy/galvanized steel, the aluminum in the joint melted and formed a brazed joint with galvanized steel, the galvanized steel hadn＇t melt; tensile strength of welded joint can be high as 128 N/mm; the microstructure showed that, a thin intermetallic compound layer is generated on the welded brazing interface, its thickness is 3-4 μm.
出处
《应用激光》
CSCD
北大核心
2012年第6期497-500,共4页
Applied Laser
基金
吉林省自然科学基金资助项目(项目编号:201115156)
关键词
铝合金
镀锌钢
异种金属
激光熔-钎焊
aluminum alloy
galvanized steel
dissimilar metal
melting-brazing by laser weld
