Wear behavior and nano-structure of surface layers of Hadfield steel under impact loading  

作　　者：许云华 陈瑜眉 朱金华 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an710049, China Institute of Wear Resistance Materials, Xi'an University of Architecture and Technology, Xi'an 710055, China [2]State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an710049, China

出　　处：《Progress in Natural Science:Materials International》2001年第6期447-453,共7页自然科学进展·国际材料（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.59771048 and 50071045) and Subsidized by the Special Funds for the Major State Basic Research Projects (G19990605).

摘　　要：Under high energy impact contact loading, a turning on the weight loss-impact cycle (W-L-N) curve has been found, which results from the formation of nano-sized grains embedded in amorphous in the surface layers of Hadfield steel. As the impact energy increases, the wear rate, dW(L)/dN, first increases then decreases. The nanostructure due to the accumulation of plastic deformation is composed of nano-sized grains spanning 10 similar to 50 atoms and amorphous structures.Under high energy impact contact loading, a turning on the weight loss－impact cycle (WL-N) curv e has been found, which results from the formation of nano-sized grains embedded in amorphous in the surface layersof Hadfield steel. As the impact energy increases, the wear rate, d WL/dN, first increases then decreases. The nanostructure due to the accumulation of plastic deformation is composed of nano-sized grains spanning 10 ～ 50 atoms and amorphous structures.

关 键 词：Hadfield steel impact wear nano-sized grains amorphous structure 

分 类 号：TG174[金属学及工艺—金属表面处理]