摘要
Isothermal compression tests were conducted to predict the hot deformational flow stress behaviour of 2024AI-T3 alloy with respect to a wide range of strain rates （0.001-100 s l）, strains （0.1-0.5） and temperatures （573-773 K）. The prediction capabilities of various constitutive models for 2024A1 alloys and a recently developed constitutive model were evaluated using statistical parameters such as the average absolute relative error （AARE） and the correlation coefficient （R）. Models recorded the lowest AARE （4.6%） and the highest correlation coefficient （R=0.99） were developed compared with the other models. Hence, this model can track the deformational behaviour of 2027Al-T3 alloy more accurately compared with other models throughout the entire processing domain investigated.
为了预测Al2024-T3合金热变形加工工艺的流变应力行为,在应变速率(0.001~100 s^(-1))、应变(0.1~0.5)和温度(573~773 K)条件下,进行了等温压缩试验。采用统计参数,如平均相对误差绝对值(AARE)和相关系数(R)评估了Al2024合金不同的本构模型和最新构建的本构模型的预测能力。与其他的模型相比,最新构建的模型能得到最低的AARE(4.6%)和最高的相关系数(0.99)。因此,与其他模型相比,该模型能更精确地描述Al2027-T3合金的变形行为。
