Deformation twins are observed in Q235B steel body, and adiabatic shear bands (ASB) in TA2 side are caused by plastic deformation under the high strain velocity, and at the same time ASBs play the role of crack source.

• 在Q235B钢基体中观察到形变孪晶,而在TA2侧观察到的绝热剪切带(ASBs),它是材料在高应变速率下塑性变形的结果,同时又是一种裂纹源;