Microstructure evolution of adiabatic shear bands in AM60B magnesium alloy under ballistic impact
作者： L Zhen , DL Zou , CY Xu , WZ Shao , None
DOI: 10.1016/J.MSEA.2010.06.013
关键词:
摘要: Abstract Microstructure evolution of adiabatic shear bands (ASBs) in AM60B Mg alloy impacted by a GCr15 projectile at velocity 500 m s −1 was studied through optical microscope (OM), scanning electron (SEM) and transmission (TEM). The results show that the deformed transformed were formed around crater, under different etchants presented responses, which indicated etching color to distinguish inaccurate. ultrafine equiaxed dynamic recrystallized grains confirmed, twinning-induced rotational recrystallization mechanism proposed be responsible for formation bands. Microhardness measurements microhardness two times higher than matrix, should attributed strain hardening grain refining.
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