Feature of flow stress of aluminum sheet used forcan during hot compression

来源期刊：中国有色金属学报(英文版)2000年第5期

论文作者：傅高升 钱匡武 陈文哲 康积行

文章页码：671 - 674

Key words：aluminum sheet used for can; high temperature plastic deformation; compression; flow stress

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.