工艺参数对紫铜搅拌摩擦焊焊接接头成形及力学性能的影响
Effect of Process Parameters on Formation and Mechanical Properties of Welded Joints of Copper by FSW
肖 兵
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作者单位：（南昌工程学院 机械与电气工程学院，江西 南昌 330099）
中文关键字：搅拌摩擦焊； 紫铜； 工艺参数
英文关键字：friction stir welding; copper; process parameters
中文摘要：对T2紫铜的搅拌摩擦焊工艺进行了试验研究，并分析了焊接工艺参数对接头成形和力学性能的影响。结果表明，搅拌头形状和焊接速度、搅拌头转速、搅拌头偏转角度等工艺参数对焊缝成形有重要的影响。当焊接规范合适时，可以得到成形美观、内部无缺陷、力学性能良好的接头。焊接接头的硬度分布沿焊缝中心基本对称，焊核区硬度较高，热影响区硬度最低。
英文摘要：The welding process of friction stir welding for joining copper was studied, and the effects of process parameters on welding formation and mechanical properties were analyzed. The results show that the shape of pin, welding speed, rotating velocity, deflected angle of pin and plunge depth have important influences on the welding formation. The welded joint with good appearance, defect-free and excellent mechanical properties can be obtained under optimum joining conditions. The microhardness distribution of the welded joint is along the welding line. The microhardness is higher in nugget zone, and lowest in HAZ.