National Natural Science Foundation of China [U20A20275]; Natural Science Foundation of Hunan Province, China [2021JJ40096]
机构署名：
本校为其他机构
院系归属：
机电工程学院
摘要：
Based on the investigation of mechanical response and microstructure evolution of a commercial 7003 aluminum alloy under high-speed impact, a new simple and effective method was proposed to determine the critical strain required for the nucleation of adiabatic shear band (ASB). The deformation results of cylindrical and hat-shaped samples show that the critical strain required for ASB nucleation corresponds to the strain at the first local minimum after peak stress on the first derivative curve of true stress−true strain. The method of determi...
