Effect of cryomilling time on microstructure evolution and hardness of ...
6 g of AZ31 powders and a stainless steel ø 25 mm grinding ball were loaded into the stainless steel 50 ml grinding jar in an argon atmosphere glovebox (MBRUAN, Germany). One cycle of the cryomilling process involved precooling, grinding and intermediate cooling. Detailed experimental parameters are shown in Table 1. The powders were ...