金属加工（热加工）Issue(6)：23-27,34,6.
20CrNiMo钢渗碳齿轮不同应力比下弯曲疲劳性能研究
Study on bending fatigue properties of 20CrNiMo steel carburized gears under different stress ratios
摘要
Abstract
To investigate the fatigue performance of 20CrNiMo steel carburized gears under different stress ratios,this experiment employed a fatigue testing machine to conduct bending fatigue tests on carburized gears at stress ratios of 0.50,0.33,and 0.25,respectively.The study indicates that fractures in 20CrNiMo steel carburized gears primarily occur at the tooth root region,with intergranular fracture being the dominant failure mode.Crack propagation rate increases as the stress ratio decreases.Gear fatigue life diminishes with decreasing stress ratio,reaching its maximum at a stress ratio of 0.50.关键词
渗碳处理/弯曲疲劳/应力比/断裂机制Key words
carburizing treatment/bending fatigue/stress ratio/fracture mechanism引用本文复制引用
张瑞臣,冯显磊,刘爱军..20CrNiMo钢渗碳齿轮不同应力比下弯曲疲劳性能研究[J].金属加工（热加工）,2026,(6):23-27,34,6.基金项目
宁夏回族自治区自然科学基金(2024AAC03830). （2024AAC03830）
