搅拌摩擦焊及氩弧焊接头的组织形貌  

Microstructure Evolution of Friction Stir and TIG welding

作　　者：王训宏[1] 王快社[1] 沈洋[1] 徐可为[2] 王红霞[3] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]西安交通大学金属材料强度国家重点实验室,陕西西安710049 [3]成都飞机工业集团,四川成都610092

出　　处：《电焊机》2006年第4期63-65,共3页Electric Welding Machine

基　　金：陕西省科技计划资助项目(2003K07-G8);陕西省教育厅产业化资助项目(04JC18)

摘　　要：对1060铝合金进行了搅拌摩擦焊和氩弧焊,对比分析了2种工艺方法对铝合金焊接接头组织演变行为的影响,结果表明:双面氩弧焊接头组织表现出明显的铸态组织,并且靠近熔池的柱状晶沿母材向对接中心线显著增大,所产生的内应力增加了晶界开裂的倾向;搅拌摩擦焊接头比氩弧焊接头具有更为细小的晶粒和狭窄的焊接热影响区。焊核区由于动态再结晶具有细小的等轴晶粒,旁边存在一个特殊的组织形貌——热机影响区域。The alluiminum alloy 1060 was wehted by ti＇iction stir welding and TIG welding,which were compared to evolutc the influence of process on microstructure.The result shows that toundry microstrueture was found in two-side TIG joint and columnar grains close to fusion obviously increased along master material to central line which inner stress eneouraged the crack.The fine grain and narrow HAZ were tound in friction stir weht and the dynamic recrystalization produces fine grain.A special zone-thermo mechanical affected zone was found.

关 键 词：搅拌摩擦焊接 铝合金 组织演变 晶粒细化 动态再结晶 

分 类 号：TG444.77[金属学及工艺—焊接] TG456