应变速率对8090铝锂合金动能吸收能力的影响  

Effects of strain rate on the kinetic energy-absorbing capacity of 8090 Al-Li alloy

作　　者：赵一生[1,2] 

机构地区：[1]深圳职业技术学院,广东深圳518055 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《兵器材料科学与工程》2010年第4期43-45,共3页Ordnance Material Science and Engineering

摘　　要：采用分离式Hopkinson压杆技术,对8090铝锂合金T3态板材试样进行冲击压缩实验。获得不同应变速率对应试样的应力-应变曲线。对应力-应变曲线进行面积积分,研究应变速率对试样动能吸收能力的影响。结果表明:应变速率对8090铝锂合金试样动能吸收能力的影响显著,利用Origin7.0中的线性拟合工具获得应变速率ε.与动能吸收能力Q呈现线性关系:Q=-27.8+0.032 51×ε.。Dynamic impact compression test of 8090-T3 Al-Li alloy was performed by split Hopkinson pressure bar（SHPB）.The stress-strain curves of 8090-T3 Al-Li alloy corresponding to different strain rates were obtained.The effects of strain rate on the kinetic energy-absorbing capacity of 8090 Al-Li alloy were investigated by integrating the curves of stress-strain.The results show that significant effects of strain rate ε.on kinetic energy-absorbing capacity Q of the alloy are identified and linear relationship between them was established as Q=-27.8＋0.032 51×ε^..

关 键 词：Hopkinson压杆技术 8090铝锂合金 动能吸收能力 

分 类 号：TF125.22[冶金工程—粉末冶金]