TC4钛合金搅拌摩擦焊温度场的数值模拟
Numerical Simulation of Temperature Field in Friction Stir Welding for TC4 Titanium Alloy
摘 要
根据摩擦做功原理,建立了搅拌摩擦焊接过程热输入数值模型,并利用有限元分析软件ANSYS,采用移动热源分步加载的方法,模拟出厚度为4 mm的TC4钛合金板对接过程中的瞬态温度场分布和各特征点的温度变化曲线.结果表明:TC4钛合金在焊接过程中整体温度场分布呈前面小后面大的椭圆形;达到准稳态时,温度峰值低于其熔点.
搅拌摩擦焊
数值模拟
温度场
titanium alloy
friction stir welding
numerical simulation
temperature field
Abstract
Based on the principle of friction work,a numerical model of the heat input in the process of friction stir welding was established.The distribution of the transient temperature field and the temperature variable curve of feature points in the welding process of TC4 titanium alloy plate (4 mm) were accurately simulated by the FEA software of ANSYS.Results show that the distribution of temperature field is an ellipse with smaller front and bigger back in the welding process of TC4 titanium alloy,and the temperature peak is under the melting point when it was quasi steady-state.
中图分类号 TG453 TG146
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收稿日期 2007/7/3
修改稿日期 2007/10/8
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备注赵俊敏(1980-),女,河北邯郸人,硕士研究生.
引用该论文: ZHAO Jun-min,WANG Yu,YIN Xin,ZHANG Hui. Numerical Simulation of Temperature Field in Friction Stir Welding for TC4 Titanium Alloy[J]. Materials for mechancial engineering, 2008, 32(5): 78～81
赵俊敏,王玉,尹欣,张辉. TC4钛合金搅拌摩擦焊温度场的数值模拟[J]. 机械工程材料, 2008, 32(5): 78～81
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参考文献
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【2】Song M,Kovacevic R.Thermal modeling of friction stir welding in a moving coordinate system and its validation[J].International Journal of Machine Tools & Manufacture,2003,43:605-615.
【3】王大勇,冯吉才,王攀峰.搅拌摩擦焊接热输入数值模型[J].焊接学报,2005,26(12):17-20.
【4】娄贯涛.钛合金的研究应用现状及其发展方向[J].钛工业进展,2003(2):9-13.
【5】刘莹,曲周德,王本贤.钛合金TC4的研究开发与应用[J].兵器材料科学与工程,2005,28(5):47-50.
【6】曾正明.实用工程材料技术手册[M].北京:机械工业出版社,2001:791-820.
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