| 氮碳共渗钢疲劳过程的组织变化研究 |
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| 引用本文： | 章桥新,毛天尔,黄孝友. 氮碳共渗钢疲劳过程的组织变化研究[J]. 热加工工艺, 1993, 0(2) |
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| 作者姓名： | 章桥新 毛天尔 黄孝友 |
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| 作者单位： | 武汉工业大学，武汉工业大学，华中理工大学 430070，430070 |
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| 摘 要： | 对45碳钢氮碳共渗处理疲劳断裂后的断口附近的显微硬度,组织特征进行了分析。结果表明:疲劳断裂后,其显微硬度值增加,且应力越高越明显,透射电镜观察,发现不同的区域、析出物的形态及种类不同。硬度的增加是疲劳过程中氮碳变化的宏观表现。
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| 关 键 词： | 氮碳共渗钢 疲劳断裂 显微硬度 组织特征 |
Study on Microstructure Change of Nitrocarburized Steel in Fatigue Process |
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| Zhang Qiaoxin Mao Tianer Huang Xiaoyou. Study on Microstructure Change of Nitrocarburized Steel in Fatigue Process[J]. Hot Working Technology, 1993, 0(2) |
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| Authors: | Zhang Qiaoxin Mao Tianer Huang Xiaoyou |
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| Affiliation: | Zhang Qiaoxin Mao Tianer Huang Xiaoyou |
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| Abstract: | The microhardness, microstructure characteristics of the nitrocarburized 45 carbon steel after fatigue fracture were studied. The results show that the microhardness value increases after fracture. The greater the fatigue stress is the more obvious the tendency becomes. TEM observation shows that the precipitations are different in shape and variety at different areas. The increase of hardness is the macroscopic expression of carbon and nitrogen behavior in fatigue process. |
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| Keywords: | nitrocarburized steel fatigue tracture microhardness microstructure |
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