碳的分配和析出对重载齿轮渗碳层耐磨性的影响

Effect of Carbon Partition and Precipitation on Wear Resistance of Carburized Layer in Heavy-Duty Gear.

作者信息

Zhang Tianyu, Wang Jian, Pan Zhizhou, Tao Qing

机构信息

School of Materials and Physics, China University of Mining and Technology, Xuzhou 221116, China.

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

出版信息

Materials (Basel). 2021 Nov 17;14(22):6958. doi: 10.3390/ma14226958.

DOI:10.3390/ma14226958

PMID:34832357

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8618232/

Abstract

The carburizing-quenching-tempering process is generally conducted on heavy-duty gear in order to obtain favorable comprehensive mechanical performance. Different mechanical properties could be produced by carbon partition and precipitation. In this study, the carburizing-quenching-tempering process was carried out on low-carbon alloy steel in order to investigate the influence of microstructure evolution and precipitate transition on mechanical behavior and wear resistance under different carburizing/tempering durations. Favorable comprehensive mechanical property and wear resistance could be obtained in favor of long durations of carburizing/tempering. A fatigue-wear model was proposed to describe fatigue crack evolution and damage mechanism on the basis of wear features.

摘要

渗碳-淬火-回火工艺通常应用于重载齿轮，以获得良好的综合力学性能。碳的分配和析出会产生不同的力学性能。在本研究中，对低碳合金钢进行渗碳-淬火-回火工艺，以研究在不同渗碳/回火时间下，微观结构演变和析出相转变对力学行为和耐磨性的影响。较长的渗碳/回火时间有利于获得良好的综合力学性能和耐磨性。基于磨损特征，提出了一个疲劳磨损模型来描述疲劳裂纹演变和损伤机制。