摘要
通过等温热压缩试验,研究了7085铝合金在350~470℃、0.01~1.00 s^(-1)条件下的流变行为。结果表明,该合金的流变应力对温度和应变速率变化高度敏感。基于试验数据,建立了应变补偿Arrhenius本构模型,其预测值与实测值高度吻合,相关系数为0.992,平均绝对相对误差为3.13%。显微组织分析表明,不同热变形参数下的固溶组织差异主要源于动态回复与静态再结晶的竞争。
The rheological behavior of 7085 aluminium alloy was investigated via isothermal hot compression tests at temperatures of 350~470℃ and strain rates of 0.01~1.00 s^(-1).Results show that the alloy's flow stress is highly sensitive to changes in temperature and strain rate.A strain-compensated Arrhenius constitutive model was developed using experimental data,yielding a high correlation coefficient(0.992)and a low average absolute relative error(3.13%).Microstructural analysis reveals that variations in solution treated microstructures under different thermal deformation parameters arise from competition between dynamic recovery and static recrystallization.
作者
杜瑞博
李越
温浪
龚莉铭
龙帅
DU Ruibo;LI Yue;WEN Lang;GONG Liming;LONG Shuai(School of Metallurgical and Materials Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)
出处
《铝加工》
2025年第6期64-70,共7页
Aluminium Fabrication
基金
重庆科技大学研究生创新计划项目(YKJCX2420213)
重庆市自然科学基金面上项目(CSTB2025NSCQGPX0917)。
关键词
7085铝合金
热变形行为
本构模型
显微组织演化
7085 aluminium alloy
thermal deformation behavior
constitutive model
solution-treated microstructure evolution
