在Gleeble-3500热模拟试验机上对2618-Ti合金进行高温热压缩变形实验,研究该合金在温度为300～500℃范围内以50℃递增和应变速率分别为0.001、0.01、0.1和1.0s-1条件下的流变应力行为和变形组织.结果表明,流变应力随变形温度的升高而减小,而随应变速率的增加而增大;2618-Ti合金的稳态流变应力方程能较准确的预测合金的稳态流变应力.在不同的变形区域,2618-Ti合金的变形组织随变形温度和应变速率不同具有明显的变化.
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