Published 11/23/2022 at 1025 × 577 in The influence of different vacuum degree on the porosity and mechanical properties of aluminum die casting Fig.3 Three representative morphologies and compositions of pores : (a) shrinkage (b) micro porosity (c) gas pore Fig.3 Three representative morphologies and compositions of pores : (a) shrinkage (b) micro porosity (c) gas pore