The Research on the Microstructure and Property of Gear with Sinter Powder Material
The gear is a widely used common part of machinery, which is of good lubricate property and low materials consumption when made of sinter powder material. In this paper, the chemical composition, microstructure and property of sintered gear were investigated with optical microscope, scan electronic microscope, micro hardness meter and X-diffraction energy spectrometer. The results show shown that the microstructure of the gear includes of tempered martensite, carbide, residual austenite and a small quantity of cavity. The distribution of iron element is even, copper and nickel distribute unevenly and cover around the surface of carbide in gear material which makes different property of covered layer itself between carbide and base material. The existing of covered layer and weak grain-boundary strength are main reason for gear brittle fracture. The gears toughness can be increased by optimizing sintering technology and heat treatment.
sinter powder material gear microstructure
LOU Bai-yang LI Can XU Bin
Institute of Materials and Surface Engineering, Zhejing Uniersity of Technology,Hangzhou 310014,Chin Institute of Materials and Surface Engineering,Zhejing Uniersity of Technology,Hangzhou 310014,China
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
57-59
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）