المجلة الدولية للعلوم والتقنية

The present paper studies the effect of different Cryogenic heat treatment cycles on the wear behavior, toughness and hardness of DIN 1.2311 tool steel. For this purpose; the temperature was used [-195°C] as deep cryogenic temperature (DCT) with 20 hours soaking time, also the role of double tempering before and after deep cryogenic and conventional heat treatments (CHT) were studied on wear behavior of DIN 1.2311 tool steel. The results showed that the wear rate for conventional heat treatment is higher than that of the obtained for DCT specimens as a function of double tempering treatment, which led to a better improvement in wear resistance and hardness for DCT specimens compared with that of CHT processed specimens