中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 10 No. 5 October 2000 |
can during hot compression①
（1. Department Mechanical and Engineering, Fuzhou University, Fuzhou 350002, P.R.China;
2. Department of Materials Science and Engineering,
Central South University of Technology, Changsha 410083, P.R.China）
Abstract:The flow stress feature of aluminum sheet used for pressure can during plastic deformation at elevated temperature was studied by isothermal compression test using Gleeble 1 500 dynamic materials testing machine. The experimental results show that the steady state deformation is remarkable when the material is deformed in the temperature range of 350~500℃at strain rates within the range of 10-2~10.0s-1. The material is sensitive to positive strain rate. A hyperbolic sine relationship is found to correlate well the flow stress with the strain rate, and an Arrhenius relationship with the temperature. Semi-empirical constitutive equations of the flow stress are derived from all experimental data for tested material during plastic deformation at elevated temperature by polyelement linear regression analysis.
Key words: aluminum sheet used for can; high temperature plastic deformation; compression; flow stress
