摘要
目的为了有效改善Al-Cu-Mg-Zn超硬铝合金盘类锻造构件成形精度和力学性能。方法通过对代号7A04的Al-Cu-Mg-Zn系超硬铝合金进行热压缩实验,分析其流变行为;通过应力-应变数据,建立本构方程及热加工图。将构建的7A04超硬铝合金材料模型导入有限元分析软件中,同时对锻件成形过程进行仿真模拟并优化。结果获得了基于Arrhenius模型的流变应力本构方程;确定了7A04超硬铝合金最适宜的加工区域,为后续的仿真模拟提供指导;基于7A04超硬铝合金盘类构件锻造成形有限元仿真模拟分析结果,获得了变形均匀锻件的最优方案。结论通过全尺寸锻造生产实验对模拟分析结果进行验证,获得了变形均匀且无锻造工艺缺陷的7A04超硬铝合金盘类构件。
The work aims to effectively improve the geometric accuracy and mechanical properties of forged Al-Cu-Mg-Zn ultra-hard aluminum alloy disc-shaped component. The rheological behaviors of Al-Cu-Mg-Zn ultra-hard aluminum alloy named 7A04 were investigated by hot compression tests. The constitutive equation and processing maps were established according to stress-strain data. The established 7A04 ultra-hard aluminum alloy model was imported into simulation analysis software, and the forging process was simulated and optimized. The rheological stress-based equations based on the Arrhenius model were obtained and the most suitable processing area of 7A04 ultra-hard aluminum alloy was determined, which provided accurate guidance for subsequent simulation. According to the finite element simulation results of forged 7A04 ultra-hard aluminum disc-shaped component, the optimal solution for homogeneous plastic deformation of forged component was obtained.The simulation analysis results are verified by full-size forging production experiments, and the 7A04 ultra-hard aluminum alloy disc-shaped components with uniform deformation and no forging process defects are obtained.
作者
杜冲
汪泽匪
孟毅
杨新泉
王师
DU Chong;WANG Ze-fei;MENG Yi;YANG Xin-quan;WANG Shi(Hunan Vanguard Group Co.,Ltd.,Changsha 410100,China;Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing,Chongqing University,Chongqing 400044,China)
出处
《精密成形工程》
北大核心
2022年第2期101-109,共9页
Journal of Netshape Forming Engineering
基金
国家自然科学基金面上项目(51975071)
国家工业和信息化部工业强基工程项目(TC180A3Y1/18)
重庆英才计划(CQYC202005068)。
关键词
超硬铝合金
压缩实验
锻造成形
热加工图
盘类构件
ultra-hard aluminum alloy
compression test
forging
processing map
disc-shaped component
