Test and Analysis on Peeling and Cracking on Surface of 45 Steel Shafts

2017 International Conference on Structural, Mechanical and Materials Engineering

材料科学;力学

Li, Xinghui^1

Department of Architecturl Engineering, Jiangsu Prvince Xuzhou Technician Institute Xuzhou, Jiangsu, China^1

关键词: 45 steel;    Chemical composition analysis;    Cracked shaft;    Quenching and tempering;    Surface quenching;    Test and analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/248/1/012034/pdf
DOI  :  10.1088/1757-899X/248/1/012034

来源: IOP

【 摘 要 】

Aiming at the peeling and cracking appear on the surface of a 45 steel shaft after surface quenching and grinding, we've conducted chemical composition analysis, hardness test and metallographic microstructure analysis for the cracked shaft sample. The results shows that the main reason for the peeling and cracking of 45 steel shafts is the stress generated due to the uneven structures produced on the surface during quenching and tempering after forging and surface quenching.