The thickness directional compressive deformation behavior of kinetic sprayed pure aluminum layers was investigated. Using kinetic spray processes, 15-㎜ thick pure Al coating layers could be made. The strain rate effect on the mechanical properties ...
The thickness directional compressive deformation behavior of kinetic sprayed pure aluminum layers was investigated. Using kinetic spray processes, 15-㎜ thick pure Al coating layers could be made. The strain rate effect on the mechanical properties and deformation behavior of pure aluminum coating layer were investigated by compression test (from 1 × 10?³/s to 1 × 10?¹/s) and Split-Hopkinson Pressure Bar (from 1.9 × 10³/s to 3.3 × 10³/s). In compression and SHPB tests, yield strength of kinetic sprayed pure aluminum increased from 200 ㎫ to 224 ㎫ with increasing strain rate. The strain rate sensitivity of kinetic sprayed pure aluminum material was 0.0118. Due to the initial severely deformed structure of the kinetic sprayed coating material, a strain softening phenomenon occurred after the yield point even at room temperature because of dynamic recovery, based on the results of the analysis. The production of high-strength metal bulk materials using kinetic spray processes was deemed possible.