TC4钛合金静止轴肩和传统搅拌摩擦焊的温度场对比  

Temperature Field Comparison of TC4 Titanium Between Stationary Shoulder Friction Stir Welding and Traditional Friction Stir Welding

作　　者：姬书得[1] 卓彬 高双胜[1] 邢敬伟[1] 马秩男[1] 路浩[2] 

机构地区：[1]沈阳航空航天大学,沈阳110136 [2]南车青岛四方机车车辆股份有限公司,青岛266111

出　　处：《航空制造技术》2016年第19期98-101,共4页Aeronautical Manufacturing Technology

摘　　要：基于有限元软件ABAQUS对6mm厚的TC4钛合金传统及静止轴肩搅拌摩擦焊温度场进行了有限元模拟。结果表明,对比传统搅拌摩擦焊接,静止轴肩搅拌摩擦焊接具有较小的高温区,前进方向上具有较大的温度梯度,厚度方向上呈现柱状椭球形分布,上、下表面温度峰值差异较小,具有重叠性较好的热循环曲线。Based on the finite element software ABAQUS, temperature fields of TC4 titanium alloy with the thickness of 6mm during traditional and stationary shoulder friction stir welding are investigated by numerical simulation. The results show that stationary shoulder friction stir welding has a smaller high temperature zone and a bigger temperature gradient in the forward direction of the welding compared to conventional friction stir welding. The temperature distribution in the thickness direction appears to be ＂cylindrical＂, which means the difference between upper and lower surface is smaller compared to traditional friction stir welding. Stationary shoulder friction stir welding owns better overlapping thermal cycling curves on the top and bottom surfaces.

关 键 词：TC4钛合金 静止轴肩搅拌摩擦焊 传统搅拌摩擦焊 温度场 数值模拟 

分 类 号：TG453.9[金属学及工艺—焊接]