Microstructure and Wear Resisting Property of 40Cr Steel Treated by Supersonic Particles Bombarding
Severe plastic deformation can be introduced on the surface of metallic materials,and nanostructured surface layer is induced,which incorporates the surface modification technique with nanomaterials.The severe plastic deformation method-Supersonic Particles Bombarding (SSPB) was used to treat the anealled 40Cr steel.The surface microstructure and area where is about 50μm away from the top suface of 40Cr steel after SSPB treatment were characterized by transmission electron microscopy (TEM).Wear resisting property lubricated by liquid paraffin (LP)+0.3%ZDDP of SSPB sample was studied.Equiaxed nanocrystallites with random crystallographic orientation were obtained on the top surface of SSPB treated 40Cr steel.Ferrite and pearlite were deformed severely at the depth about 50μm away from the top suface,and cementite in the pearlite shows plasticity.Wear loss of polished SSPB sample is the lowest and that of untreated sample is the biggest.
severe plastic deformation supersonic particles bombarding pearlite microstructure lubricated friction
Liu Yuliang Xiong Tianying
School of Materials Science and Engineering, Henan University of Science and Technology,Luoyang, Chi Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
国际会议
杭州
英文
49-52
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）