铝合金搅拌摩擦焊接头微观组织分析  

Microscopic Organization Analysis of Stirring Friction Welded Jiont for Aluminium Alloy

作　　者：刘元朋[1] 文振华[1] 尹欣[1] 孙新[1] 

机构地区：[1]郑州航空工业管理学院机电工程学院,河南郑州450015

出　　处：《热加工工艺》2012年第7期122-123,共2页Hot Working Technology

基　　金：河南省科技攻关计划项目(112400450390);河南省高等学校青年骨干教师资助计划项目(2011GGJS-137);精密制造技术与工程开放实验室2010开放基金资助项目(PMTE201002A)

摘　　要：对4mm厚的铝合金板材进行搅拌摩擦焊接,用光学显微镜观察了焊缝截面的显微组织。由于温度和变形程度不同,焊缝不同位置的组织有所不同,母材区晶粒组织明显比过渡区和搅拌区的晶粒组织细小而均匀。过渡区的材料由于受到搅拌头的剪切作用,发生了大的弯曲变形,呈板条状组织。The objective of this work was to demonstrate the feasibility of friction stir welding （FSW） for joining of 4 mm plates of Aluminium. Microstructures of the defect-free welds were examined using optical microscope. Because the temperature and the different locations, the welds region displayed several micro structurally distinct regions. The grains of the base metal zone were tiny and uniform than the transition and the stir zones. Due to the mixing of head shearing, the material of the transition zone had large bending deformation, and presented a plate strip organization.

关 键 词：铝合金 搅拌摩擦焊 微观组织 

分 类 号：TG453[金属学及工艺—焊接]