Constitutive Equations for High Temperature Flow Stress Prediction of 6063 Al Alloy Considering the Compensation of Strain
In order to develop the appropriate constitutive equation which can precisely model high temperature flow stress of 6063 Al ahoy, a series of isothermal hot compression tests were performed at temperatures from 573 to 773 K and strain rates from 0.5 to 50 s-1 on a Gleeble-1500 thermo-simulation machine.Zener-Hollomon parameter in an exponent-type equation was used to describe the combined effects of temperature and strain rate on hot deformation behaviour of 6063 Al alloy, whereas the influence of strain was incorporated in the devel oped constitutive equation by considering material constants (α, n, Q and A) to be 4th order polyno mini functions of strain.The results show that the developed constitutive equation can accurately pre dict high temperature flow stress of 6063 Al alloy, which demonstrates it can be suitable for simulating hot deformation processes such as extrusion and forging, and for properly designing the deformation parameters in engineering practice.
6063 Al alloy constitutive equation flow stress strain hot deformation
Chunlei Gan Kaihong Zheng Wenjun Qi Mengjun Wang
Guangzhou Research Institute of Non-ferrous Metals (Guangdong General Research Institute for Industr Key Laboratory of Nonferrous Metal Materials Science and Engineering of Ministry of Education ,Centr
国际会议
The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)
昆明
英文
13-17
2013-11-19（万方平台首次上网日期，不代表论文的发表时间）