锻压技术

工艺参数对TC6合金叶片锻造变形的影响

英文标题：Effect of processing parameters on TC6 alloy airfoil blade during forging process

作者：房冬冬李淼泉罗皎

单位：西北工业大学材料学院

分类号：TG316

出版年,卷(期):页码：2010,35(4):160-165

摘要：

利用热力耦合弹塑性有限元法对TC6合金叶片锻造过程进行三维数值模拟。研究了工艺参数对叶片锻造过程中温度场、应力应变场的影响及叶片锻造卸载后残余应力的分布情况，从而揭示合金叶片锻造过程的成形规律。研究结果表明，变形温度、摩擦因子和变形速度等工艺参数对叶片的等效应力和温度场有显著影响，而对等效应变的影响相对较小；叶片终锻卸载后残余应力分布不均匀，边缘部位残余应力较大，而内部残余应力较小，锻造过程中的应力集中区在卸载后同样容易出现残余应力的集中。

3D simulation for the forging of TC6 alloy airfoil blade was carried out with the help of the elastic-plasticity finite-element method. According to the simulation, the effects of processing parameters on the temperature, equivalent stress and equivalent strain were studied in the forging process，and the distribution of residual stress after unload was also discussed. The results indicate that the deformation temperature, friction factor and strain rate have significant effects on the temperature and equivalent stress, but have no significant effects on the equivalent strain. The distribution of the residual stress after unload is inhomogeneous during final forging, the residual stress on the edge of the blade is higher than that inside the blade and the residual stress concentration zones after unload appear in the stress concentration zones during the forging process.

基金项目：

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