40GrNiMo中硬齿轮材料点蚀破坏的金相研究  

Study on Pitting Failure of Gear Material 40CrNiMo With Medium Hardness by Means of Metalloscopy

作　　者：瞿学良[1] 杨宏伟[2] 

机构地区：[1]江苏广播电视大学,南京210013 [2]郑州机械研究所,郑州450052

出　　处：《南京师范大学学报（工程技术版）》2001年第4期74-78,共5页Journal of Nanjing Normal University(Engineering and Technology Edition)

摘　　要：采用金相试验方法 ,对 4 0 Cr Ni Mo中等硬度齿轮材料在接触疲劳过程中的表面破坏形态、裂纹的萌生与扩展等问题进行了研究 。By means of metalloscopy,the paper deals with the crack initiation and propagation as well as the fracture morphology of the surface in a gear material 40CrNiMo with medium hardness,meanwhile it analyzes the failure mechanism of the material on metallograpy.

关 键 词：接触疲劳 齿轮 点蚀破坏 

分 类 号：TG113.12[金属学及工艺—物理冶金]