以AA7075-T6铝合金为研究对象,综合考虑应变、应变速率和温度等因素的耦合作用,建立了流变应力模型并进行试验验证,利用相关系数、平均绝对误差等方法对其预测能力进行了分析。结果表明:温度和应变速率对材料流动应力影响较大,在变形过程中同时存在加工硬化和动态回复现象;随温度升高,加工硬化程度逐渐减小;所建模型预测能力较好,预测结果与试验结果接近度较高。 Taking AA7075-T6 aluminum alloy as the research object, the flow stress model was established considering the coupling effect of strain, strain rate and temperature. The predictive ability of AA7075-T6 aluminum alloy was evaluated by means of correlation coefficient and mean absolute error analysis. The results show that the temperature and strain rate have a great influence on the flow stress of the material, and both work-hardening and dynamic recovery occur during the deformation process. With the increase of temperature, the degree of work-hardening decreases gradually. The model predictive ability is better. Close to the test results.