零保温淬火工艺对25MnSiMoVA钢力学性能的影响  

Effect of Zero Time Holding Quenching Process on Mechanical Properties of 25MnSiMoVA Steel

作　　者：张宏伟 王艳丽[2] 郑喜平 

机构地区：[1]焦作市质量技术监督检验测试中心,总工程师办公室,河南焦作454000 [2]河南理工大学万方科技学院(郑州校区)信息科学与工程系,河南郑州450000 [3]郑州精益达汽车零部件有限公司底盘事业部,河南郑州450000

出　　处：《热加工工艺》2016年第12期190-192,196,共4页Hot Working Technology

基　　金：河南省科技厅项目(132300410459)

摘　　要：研究了25MnSiMoVA钢的零保温淬火工艺,并对显微组织和力学性能进行了分析。结果表明:硬度、强度和耐磨性均随淬火温度的升高而增加,在940℃淬火时达到最大峰值,超过940℃以后,随着淬火温度的升高而降低;在940℃淬火后的显微组织为细小的板条马氏体,碳、钒元素存在浓度起伏;在150N、300 r/min、1200 s的试验条件下,940、970℃淬火后的试样磨损质量损失最少,具有最佳的抗磨损性能。The zero time holding quenching process of 25MnSiMoVA steel was studied,and the microstructure and mechanical properties of the steel were analyzed. The results show that hardness, strength and wear resistance increase with the increase of quenching temperature, and reach the maximum at 940 ℃, but reduce with the quenching temperature increasing more than 940 ℃. The microstructure of the steel is the finer lath martensite and the concentrations of carbon and vanadium element are fluctuation after quenching at 940 ℃. Under experimental conditions of the 150 N, 300 r/min and1200 s, the wear mass loss of the samples after quenching at 940 ℃ and 970 ℃ is least, which has best anti-wear performance.

关 键 词：零保温 25MnSiMoVA 钢 耐磨性 硬度 

分 类 号：TG142.1[一般工业技术—材料科学与工程]