宇航材料工艺2024，Vol.54Issue(5)：98-102,5.DOI:10.12044/j.issn.1007-2330.2024.05.014
变形速率对2219铝合金力学性能影响
Effect of Strain Rate on Mechanical Performance of 2219 Aluminum Alloy
摘要
Abstract
In order to study the relationship between strain rate and mechanical performance of 2219 aluminum alloy,through the uniaxial tensile test in 6 different strain rates in 0.05、0.10、0.15、0.20、0.30、0.40 mm·s-1,the stress-strain curve of 2219 aluminum alloy was obtained under different strain rates.In order to accord with the actual production situation,selected 4 larger strain rate in 0.075、0.30、0.40、0.55 mm·s-1,changed the material state,conducted the uniaxial tensile test and metallographic analysis,the variation trend of mechanical performance of 2219 aluminum alloy was tested and verified under different strain rates.The results show that mechanical performance of 2219 aluminum alloy is insensitive in yield strength and tensile strength.As the strain rate goes up,percentage elongation has an upward trend.According to the actual situation of processing equipment,a higher deformation rate(recommended not to exceed 0.4 mm·s-1)is chose to improve processing efficiency.关键词
变形速率/2219铝合金/屈服强度/抗拉强度/断后延伸率Key words
Strain rate/2219 aluminum alloy/Yield strength/Tensile strength/Percentage elongation after fracture分类
矿业与冶金引用本文复制引用
李玉辰,谷春杰,张下陆,李永胜,龚立林..变形速率对2219铝合金力学性能影响[J].宇航材料工艺,2024,54(5):98-102,5.基金项目
天津市科技支撑项目(17YFZCGX00530) （17YFZCGX00530）
