Liu X.,Shandong University |
Liu X.,Shandong Iron and Steel Co. |
Feng Y.,Shandong Iron and Steel Co. |
Yang H.,Shandong University |
And 5 more authors.
Jinshu Rechuli/Heat Treatment of Metals
Phase transformation rule, microstructure and properties of 500 HBW wear-resistant steel were investigated. The results show that when the chemical composition of steel is given, the quenching cooling rates after austenitizing greatly affect on microstructure and the properties of steel. When cooling rate from 3℃/s to 55℃/s, the hardness of the steel changes from 341 HV10 to 596 HV10, the tensile strength varies from 979 MPa to 1690 MPa correspondingly. The hardness and tensile strength increase with increasing of cooling rates. The main cause is due to appearance and increasing of bainite and martensite at higher cooling rate other than ferrite and pearlite at lower cooling rate. ©, 2015, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved. Source