A Heat Treatment Process for Improving Mechanical Properties of 45 Steel
The heat treatment process for improving the mechanical properties of 45 steel was studied.The microstructure and mechanical properties of 45 steel treated by this process were observed and tested by optical microscope,hardness tester and electronic universal tester.It was compared with the samples of conventional heat treatment in the same process.The results show that,the mechanical properties of 45 steel can be effectively improved by this process.Under the action of 4 GPa pressure,after 15min treatment at 900 ℃ and tempering at 550 ℃ for 40 min,the hardness and compression yield strength of 45 steel are 36.5 HRC and 928 MPa,respectively,which are 17.74％and 16.88％higher than those of atmospheric pressure quenching and tempering treatment,respectively.
45 steelhigh pressurequenching and temperinghardnesscompression yield strength
万方数据
维普
