超声波淬火对20Mn2A钢力学性能的影响  

Effect of Ultrasonic Quenching on Mechanical Properties of 20Mn2A Steel

作　　者：王冠[1] 赵慧丽[2] 郑喜平 张晓娜 

机构地区：[1]河南理工大学经济管理学院,河南焦作454003 [2]安阳工学院机械工程学院,河南安阳455000 [3]林州重机集团股份有限公司技术处,河南安阳456550 [4]江苏振达钢管集团有限公司技术部,江苏无锡214046

出　　处：《热加工工艺》2014年第20期132-134,共3页Hot Working Technology

基　　金：2012年河南省哲学社会科学委托项目(2012-guihua)

摘　　要：对20Mn2A的超声波淬火工艺进行了研究,并对显微组织和力学性能进行了分析。结果表明:硬度、强度和耐磨性随超声波涡流压力的升高而增加,伸长率随超声波涡流压力的升高而下降,超声波淬火后的显微组织是细小的板条马氏体。在100 N、300 r/min及1000 s的实验条件下,2.0、2.5和3.0 MPa超声波涡流压力淬火后的试样具有最小的磨损质量损失,耐磨性能良好。The ultrasonic quenching process of 20Mn2A was studied. The microstructure and mechanical properties of the steel were analyzed. The results show that, the hardness, strength and wear resistance of 20Mn2A steel rise along with the increase of eddy pressure, and the elongation falls down with the the increase of eddy pressure. The microstructure of the steel is the finer lath martensite after ultrasonic quenching. Under 100 N, 300 r/min, 1000 s experimental conditions, the wear mass loss of the samples after 2.0 MPa, 2.5 MPa, 3.0 MPa eddy pressure ultrasonic quenching is least, with excellent wear resistance.

关 键 词：超声波淬火 20Mn2A钢 涡流压力 耐磨性 

分 类 号：TG156.3[金属学及工艺—热处理]