Surface Nanocrystallization of 36CrNiMo4 induced by ultrasonic processing

摘要：

A nanocrystallized microstructure was generated on the surface of 36CrNiMo4 by sever plastic deformation induced by ultrasonic processing. The grain refinement mechanism of surface nanocrystallization was analyzed by optical microscope (OM), transmission electron microscopy (TEM), X-ray diffractometer (XRD), microhardness and roughness test. The results show that the average grain size on the surface layer is about 25nm after the surface ultrasonic processing, and the nanocrystallines present an equiaxed shape. The grain size increases gradually from the surface to the inside with the weakening of ultrasonic processing. The surface roughness is decreased and the hardness is increased significantly.

作者: BingYing Wang Z.T.Sun D.P.Wang T.Wang

作者单位: College of Mechanical and Electronic Engineering, China University of Petroleum, Dongying 257061, PR School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China

会议类型: 国际会议

会议名称: The 6th International Conference on Physical and Numerical Simulation of Materials Processing(第六届材料与热加工物理模拟及数值模拟国际学术会议 ICPNS 2010)

会议地点: 桂林

会议语种:英文

页码: 1-6

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）