Dynamic Pressure Hardening of Irregular Shapes

摘要

The strengthening and hardening effects of shock waves in metal alloys were investigated, and an explosive hardening production technique was developed. Specimens of AISI 1018, AISI 4335, AISI 4340, and AISI H-11 steels; 18% nickel maraging steel; AISI 301, AISI 303, AISI 304, AISI 410, and AISI 416 stainless steels; and 6061 aluminum were shocked by detonation of Detasheet A, Aerex L-1, nitroguanidine, and C-4 explosives in direct contact with the specimen surface. All materials tested showed an initial hardness increase in various degree, with the greatest increase occurring in metals with the highest content of free ferrite and the lowest content of pearlite. The maximum initial hardness increase observed was 25 RB in AISI 301 stainless steel. (Author)