喷丸强化用钢丝切丸的磨损失效机理  

Wear Failure Mechanism of Cut Wire Shot Used in Shot Peening

作　　者：石小云[1] 刘如伟[1] 刘超[1] 张守全 徐金成 卢军[3] SHI Xiao-yun LIU Ru-wei LIU Chao ZHANG Shou-quan XU Jin-cheng LU Jun(l.School of Materials Science and Engineering. Shandong University, Jinan 250061, China Shandong Kaitai Group Co.. I.td., Zouping 256217. China Jinan Foundry and Metalforming Machinery Research Institute Co., I.td.. Jinan 250022. China)

机构地区：[1]山东大学材料科学与工程学院,济南250061 [2]山东开秦集团有限公司,邹平256217 [3]济南铸造锻压机械研究所有限公司,济南250022

出　　处：《机械工程材料》2016年第11期67-70,共4页Materials For Mechanical Engineering

摘　　要：用ERVIN寿命试验机模拟了喷丸强化用钢丝切丸的冲击磨损过程,得到了磨损量与循环次数的关系曲线,用扫描仪记录了钢丝切丸磨损形貌的变化过程,用扫描电子显微镜观察了钢丝切丸的磨损形貌。结果表明:在冲击磨损试验过程中,钢丝切丸的形貌逐渐由圆柱状变为类球状,最终变为较小的丸粒;钢丝切丸的冲击磨损失效过程可分为钝化阶段、稳定磨损阶段、剧烈磨损阶段,这三个阶段的的主要磨损失效机理分别为黏着磨损、表层剥落和大块断裂。The impact wear process of shot peening used cut wire shot was simulated by ERVIN test machine to obtain the relationship curve between abrasion loss and cycle index. The changing process of wear morphology of cut wire shot was recorded by scanner. The wear surface morphology of cut wire shot was observed by scanning electron microscope （SEM） . The results show that during the process of impact wear test, the shape of cut wire shot gradually changed from cylindrical shape to near-spherical shape, and eventually changed into smaller pill.The impact wear failure process of cut wire shot could be divided into three stages： conditioned stage, stahle wear stage and severe wear stage, the wear failure mechanisms of the three stages were adhesive wear, surface peeling and block fracture, respectively.

关 键 词：喷丸强化 钢丝切丸 冲击 磨损 

分 类 号：TG733[金属学及工艺—刀具与模具]