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中国有色金属学报(英文版), 2017, 27(1): 36-54.
10.1016/S1003-6326(17)60005-0
搅拌头形状对异质搅拌摩擦焊铜铝接头性能的影响

其余的工艺参数保持不变的条件下研究了9种不同形状搅拌头对异质搅拌摩擦焊铜铝接头性能的影响。采用宏观组织、显微组织、拉伸试验、硬度、扫描电子显微镜和电子X射线光谱仪等力学和冶金方法评估异质接头的性能。结果表明，采用直径为8 mm的圆柱形搅拌头得到的接头强度最大。此外，当多边形搅拌头的边数减少时，碎屑缺陷增加，因此，多边形接头不适合异质搅拌摩擦焊对接接头。而且，当多边形搅拌接头边数增加时，抗拉强度也随之增大。对同一焊肩表面，相对于圆柱形的搅拌头，多边形搅拌头的搅拌区较硬脆。采用多边形搅拌头得到的焊缝的最大硬度为 HV 283。在搅拌区明显存在硬脆金属间化合物。在异质铜铝接头搅拌区存在金属间化合物，如CuAl、CuAl2、Cu3Al 和Cu9Al4。
引用： 搅拌头形状对异质搅拌摩擦焊铜铝接头性能的影响. 中国有色金属学报(英文版), 2017, 27(1): 36-54. doi: 10.1016/S1003-6326(17)60005-0
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