研究了TA15合金的热模拟压缩实验.结果表明:变形温度的升高和应变速率的减小使峰值应力和稳态应力显著降低,变形温度会影响进入稳态流动所需变形量.以热模拟压缩实验为基础,建立的加工图表明:TA15合金高温变形时存在2个非稳定区域,一个是变形温度1300 K以上和应变速率10.0 s-1以上的区域,另一个是变形温度1200 K以下和应变速率0.006 s-1～1.995 s-1之间的区域.同时,建立的TA15合金高温变形时的流动应力模型表征了变形温度、应变速率和变形程度对流动应力的影响,模型的计算精度较高.
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