汽车用金属材料在高应变速率下响应特性的研究进展

摘要

基于轻量化和安全性的要求,对汽车用金属材料在高应变速率下的响应特性进行了大量的研究;对高应变速率下的试验设备、试验方法、试验数据处理方法及描述材料响应特性的本构方程等方面的研究进展进行了综述;总结了高强度钢和先进高强度钢在高应变速率下的响应特性、拟合的本构方程以及组织演变规律;介绍了典型铝合金和镁合金在高应变速率下的响应特性,提出了考虑温度和热激活能影响的描述铝合金和镁合金在高应变速率下流变特性的本构方程;对高应变速率下汽车用金属材料响应特性的试验设备、试验方法和研究方向等提出了一些建议.%Based on the requirements of light weight and safty,a lot of research on response characteristics for automobile metal materials under high strain rate was carried out.The research progress of test equipments,test methods,test data processing methods and the constitutive equation to describe the material response characteristics under high strain rates was summarized.The response characteristics, fitting constitutive equations and the microstructure evolution law of high strength steel and advanced high strength steel under high strain rates were concluded.The response characteristics of the typical aluminum alloy and magnesium alloy under high strain rates were introduced and the constitutive equation of describing rheological behavior of aluminum and magnesium alloys which considering the effects of temperature and thermal activation energe was raised.Some suggestions were proposed about test equipment,test methods,development direction of response characteristics of metallic material for automotive under high strain rates.