运用有限元方法对Ti-6Al-4V钛合金等温等通道转角挤压过程进行了模拟,获得了摩擦因子、挤压角、过渡角等挤压参数对材料变形区的应变分布和挤压载荷的影响规律.结果表明:摩擦因子的增大引起局部应变集中,摩擦因子为0.5时,最大挤压载荷比零摩擦条件时提高了2.37倍;增大挤压角有利于获得均匀等效应变,减小挤压载荷,但同时减小了单次变形的应变量;减小过渡角可以扩大均匀应变区域,但过渡角过小会引起通道转角处的严重应变集中.
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