High Strain Rate Micro-Ballistic Impact Hardness Studies on CCSs and Comparison with Static Compression

    solid material under excessive stress undergoes plastic deformation via complex processes, depending on their internal structures at various length scales. The plasticity of a material is strongly influenced by temperature, pressure, and time (or strain rate). While the quasi-static structure-property relationship of AM CCSs has become of particular interest, the extreme plastic deformation of AM CCSs far beyond the characteristic time scales of various plastic deformation mechanisms must be preemptively investigated for their applications under extreme loading conditions. We will employ laser-induced projectile impact testing (LIPIT) for the study of micro-ballistic impact hardness of AM CCSs under a high strain rate (10⁴ – 10⁷ s-1). LIPIT can be a versatile tool for extreme materials science and mechanics as it provides high-strain rate mechanical stimuli with accurate kinetic information within the ideal spatial scale (1 – 100 µm) for AM CCSs to cover multiscale microstructural phenomena.