残余奥氏体的诱发相变对Cr12钢耐磨性的影响  

THE EFFECT OF DEFORMATION INDUCED MARTENSITIC TRANSFORMATION OF RETAINED AUSTENITE ON THE WEAR RESISTANCE OF Cr12 STEEL

作　　者：刘茂华[1] 任旭芳[1] 王世清 孙增桂 

机构地区：[1]山东工业大学材料工程系

出　　处：《山东工业大学学报》1994年第3期205-210,共6页

摘　　要：利用金相、Ｘ射线、扫描电子显微镜等手段研究了Ｃｒ１２钢中残余奥氏体的形变诱发马氏体相变对耐磨性能的影响，探讨了强化机制．结果表明，Ｃｒ１２钢经１１５０℃淬火得到大量处于变塑状态的残余奥氏体，并在磨损过程中发生形变诱发马氏体相变，使表面硬度和耐磨性显著提高，超过常规的９８０℃淬火．残余奥氏体对耐磨性的强化，为逐层诱发马氏体的循环强化机制．Influence of the deformation induced martensitic transformation of retained austenite on the wear resistance of Cr12 steel is studied by means of optical microscope,X-ray diffraction and SEM techniques. The experimental results showed that the large quantity of retained austenite in the state of TRIP obtained in Cr12 steel after quenched from 1150℃ cantransform into the deformation induced martensite during the wear process. It increases the surface hardness and wear resistance of Cr12 steel greatly,over that of normal quenching from 980℃. The retained austenite in the surface layer is induced into martensite gradually,thus the wear resistance is improved.

关 键 词：铬钢 耐磨性 残余奥氏体 相变 

分 类 号：TG142.33[一般工业技术—材料科学与工程]