| 渗氮件接触疲劳强度不够高的原因分析 |
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| 引用本文： | 侯旭明.渗氮件接触疲劳强度不够高的原因分析[J].包头职业技术学院学报,2009,10(4):4-6. |
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| 作者姓名： | 侯旭明 |
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| 作者单位： | 包头职业技术学院材料工程系,内蒙古,包头,014030 |
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| 摘 要： | 分析了渗氮件硬度极高而接触疲劳强度不很高的原因。分析表明:渗氮件接触疲劳强度不够高的主要原因是渗氮层厚度太薄;在重载荷条件下,是靠低强度区(过渡区)抵抗接触疲劳破坏,故渗氮件硬度虽很高,但接触疲劳强度却不很高。
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| 关 键 词： | 接触疲劳强度 抗剪强度 渗氮层 切应力 硬度 |
Cause Analysis on the Lower Contact Fatigue Strength of Nitrided Part |
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| Hou Xuming.Cause Analysis on the Lower Contact Fatigue Strength of Nitrided Part[J].Journal of Baotou Vocational & Technical College,2009,10(4):4-6. |
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| Authors: | Hou Xuming |
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| Institution: | Hou Xuming(Material Engineering Department,Baotou Vocational & Technical College,Baotou Inner Mongolia,014030) |
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| Abstract: | Reasons for why a nitrided part has high hardness and lower contact fatigue strength are analyzed in the paper.The results show that the major reason for the lower contact fatigue strength of the nitrided part is that nitrided layer is very thin and the shearing stress is resisted by lower strength zone(transition zone) of the nitride layer when a heavy load is borne by the part,therefore the nitrided part has lower contact fatigue strength and high hardness. |
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| Keywords: | contact fatigue strength shear strength nitrided layer shearing stress hardness |
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