Effect of Heat Treatment on Microstructure and Property of 17-4PH Stainless Steel

Effect of different heat treatment processes on microstructure and property of 17-4PH stainless steel are studied.The results show that the hardness of 17-4PH stainless steel first increased and then decreased with the aging temperature rising,and it obtains the highest hardness under the aging treatment of 460 ℃×2 h.