Abstract:Martensitic hot die work steel can’t work at 700 ℃,but austenitic hot work die steel has good hightemperature strength. Six kinds of test steels and heat treatment process related were designed based on uniform design method.The hardness,room impact toughness and thermal stability were measured. The experiment results were analyzed by quadratic stepwise regression,three models were established to discribe relationship between chemical composition, heat treatment process and mechanical properties and compared with that of H13 and DIEVAR steel.The results show :Si,Mn and V had a tendency to increase room impact toughness, while Cr and Mo had the opposite tendency. Within the range of heat treatment designed, the room impact energy could reach to 300 J, and the hardness only reduced by 13HRC after treatment at 700 ℃ for 20 h.
王良平;吴晓春. 影响奥氏体热作模具钢性能的因素[J]. 钢铁, 2008, 43(11): 78-0.
WANG Liangping;WU Xiaochun. Influencing Factors of Performance for Austenitic Hot Die Work Steel. Iron and Steel, 2008, 43(11): 78-0.