亚温淬火温度对30CrMnSi钢力学性能的影响  

Effect of subcritical quenching temperature on properties of 30CrMnSi steel

作　　者：刘志强[1] 王保华[2] 黄鑫 张红霞 

机构地区：[1]河南理工大学研究生处,河南焦作454000 [2]焦作大学机电工程学院,河南焦作454003 [3]上海品彦光电科技有限公司技术部,上海201314 [4]焦作市质量技术监督检验测试中心物理检验室,河南焦作454000

出　　处：《金属热处理》2015年第6期120-123,共4页Heat Treatment of Metals

基　　金：河南省科技厅项目(132300410459)

摘　　要：研究了亚温淬火温度对30CrMnSi钢力学性能的影响,并对其显微组织进行了观察。结果表明,亚温淬火后,显微组织为细板条马氏体+弥散铁素体+残留奥氏体;硬度和抗拉强度随亚温淬火温度的升高而增加,冲击韧性先升高后降低,磨损量先减少后增加,在825℃亚温淬火时具有最佳的力学性能。Effect of subcritical quenching temperature on mechanical properties of 30 CrMnSi steel was studied,and microstructure was observed. The results show that after subcritical quenching,the microstructure is composed of fine lath martensite + dispersed ferrite + retained austenite. With subcritical temperature increasing,the hardness and tensile strength increase,impact toughness first increases and then decreases,and wear loss first decreases and then increases. The best mechanical properties can be obtained after subcritical quenching at 825 ℃.

关 键 词：30CRMNSI钢 亚温淬火 力学性能 

分 类 号：TG161[金属学及工艺—热处理]