徐州工程学院学报（自然科学版）2016，Vol.31Issue(1)：68-76,9.
基于摩擦修正的6061铝合金热压缩变形行为及有限元模拟
Hot Deformation Behavior and FEM Simulation of 6061 Aluminum Alloy During Hot Compression Based on Friction Correction
摘要
Abstract
Hot compression deformation test of 6061 aluminum alloy was performed on Gleeble‐3500 thermal mechanical simulator at the deformation temperature range of 300~450 ℃ ,the strain rate range of 0 .01~10/s and the height reduction of 60% .The errors in experimental data caused by friction were cor‐rected and the flow behavior of 6061 aluminum alloy at elevated temperature under different hot deforma‐tion conditions w as investigated .In addition ,by applying the established constitutive equation into the fi‐nite element analysis software DEFORM‐3D and creating user‐defined material properties ,the hot compres‐sion process of 6061 aluminum alloy w as simulated .T he results show that 6061 aluminum alloy has a posi‐tive strain rate sensitivity under the given experimental conditions ,the flow stress decreases with increasing deformation temperature and increases with increasing the strain rate ,which can be described by Zener‐Hollomon parameter in the hyperbolic sine equation based on modified Arrhenius model with the hot de‐formation activation energy of 314 .304 kJ/mol .During compression at elevated temperatures ,the deforma‐tion of 6061 aluminum alloy is inhomogeneous ,the largest deformation occurs at the central of specimen and the value of effective stress obtained from finite element simulation is very close to the obtained experi‐mental value .关键词
6061铝合金/热压缩变形/流变应力/摩擦修正/有限元模拟Key words
6061 aluminum alloy/hot compression deformation/flow stress/friction correction/FEM simulation分类
金属材料引用本文复制引用
王晓溪,董蔚霞,何敏..基于摩擦修正的6061铝合金热压缩变形行为及有限元模拟[J].徐州工程学院学报（自然科学版）,2016,31(1):68-76,9.基金项目
国家自然科学基金青年基金项目（51401177）；江苏省大型工程装备检测与控制重点实验室开放性课题（JSKLEDC201309）；徐州工程学院科研项目 （）
