中北大学学报（自然科学版）2026，Vol.47Issue(2)：145-155,11.DOI:10.62756/jnuc.issn.1673-3193.2025.11.0010
回火工艺对Cr-Ni-Mo系铸钢力学性能与耐磨性能的影响
Effect of Tempering Process on the Mechanical Properties and Wear Resistance of Cr-Ni-Mo Cast Steel
摘要
Abstract
This study systematically investigated the influence of tempering processes on the wear resistance of Cr-Ni-Mo cast steel.Heat treatment schedules were designed using JMatPro software with a quenching temperature of 930℃and tempering temperatures of 520℃,550℃,and 580℃.The microstructure of the test steel specimens was analyzed by scanning electron microscopy(SEM),and scratch tests were conducted.Hardness was measured using a Vickers hardness tester,while room-temperature wear resistance was evaluated using a friction and wear testing machine.The results show that with increasing tempering temperature,hardness and strength first increase and then decrease,reaching peak values of 37.5 HRC,1 207 MPa,and 1 054 MPa at 550℃.Elongation exhibits an initial decrease followed by an increase,with a maximum of 13.7%observed at 580℃.Overall variations in mechanical properties are relatively minor.Wear volume decreases progressively with rising tempering temperature,achieving the lowest value and thus the best wear resistance at 580℃.The friction coefficient curve follows the typical pattern of dry sliding friction wear:a rapid initial rise,followed by a partial decrease,and eventual stabilization.The overall performance is found to be optimal at a tempering temperature of 580℃.The heat treatment solutions designed by JMatPro software provide a theoretical basis and process guidance for experimental implementation,enabling the attainment of optimal tempering processes.关键词
JMatPro/热处理/碳化物/硬度/耐磨性Key words
JMatPro/heat treatment/carbide/hardness/wear resistance分类
矿业与冶金引用本文复制引用
冉拯,鲁若鹏,段志强,焦俊欢,闫佳华,蔡振权,周林东,赵宇宏,侯华..回火工艺对Cr-Ni-Mo系铸钢力学性能与耐磨性能的影响[J].中北大学学报（自然科学版）,2026,47(2):145-155,11.基金项目
国家自然科学基金(U23A20628) （U23A20628）
