This work was supported by the National Natural Science Foundation of China (No. U1664252 and No. 51605234 ) and the Natural Science Foundation of Hunan Province (No. 2019JJ50586 ).
机构署名：
本校为其他机构
院系归属：
机电工程学院
摘要：
Split-Hopkinson pressure bar tests were conducted on a solution-treated cast AM80 Mg alloy at 298, 423 and 523 K with strain rates (SRs) ranging from 1100 s−1 to 5000 s−1. The effects of the SR and temperature on the high-speed impact behavior and corresponding microstructure evolution were investigated. The results indicate that the flow stress behavior of the studied alloy strongly depends on the applied SR and deformation temperature. At all temperatures, the SR sensitivity (SRS) changes from positive to negative values as the applied SRs ...
