摘要
用Hopkinson拉杆装置系统地研究了高应变率下三种钢材(D60、58SiMn和45钢)的动态拉伸性能。实验结果表明,这三种材料的动态屈服应力和延伸率比各自的静拉伸值均有提高,但它们的应变速率敏感性各不相同。此外,利用剖面法和金相分析对损伤演化进行了详细的研究。
The dynamic properties of three steels D60, 58SiMn and No. 45 are systematically studied at high strain rate by using a well-designed SHTB equipment. The experimental results show that the dynamic yield stress and tensile elogation of all tested materials are higher than their static values, respectively. However, different materials indieate different strain-rate sensitivity. In addition, the dynamic process of damage evolution is studied in detail with the metallographic technique for observing the cross and logitudinal sections Of the tested specimen.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
1992年第3期65-73,共9页
Acta Armamentarii
关键词
钢
金属材料
性能
损伤
高应变率
Split Hopkinson Tension Bar, dynamic tensile properties, damage evolution, high strain rate
