Influence of Sub-tempering Quenching on Microstructure and Performance of 65Mn Steel

The structure strength and hardness of 65Mn is tested under different conditions with sub-tempering quenching,and the influence of sub-tempering quenching on structure and performance of 65Mn steel is discussed.The resuls show strength and hardness and mechanical properties is best by technics of 830 ℃quenching+ 790 ℃ sub-tempering quenching+ 450 ℃ tempering.It gains good economic benefits by sub-tempering quenching in production.