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    李志刚, 胡兰青, 许并社. 碳氮共渗及离子氮化H13钢的抗热疲劳性能[J]. 机械工程材料, 2008, 32(10): 7-9.
    引用本文: 李志刚, 胡兰青, 许并社. 碳氮共渗及离子氮化H13钢的抗热疲劳性能[J]. 机械工程材料, 2008, 32(10): 7-9.
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    LI Zhi-gang, HU Lan-qing, XU Bing-she. Thermal Fatigue Resistance of Nitrocarburized and Ion Nitrided H13 Steel[J]. Materials and Mechanical Engineering, 2008, 32(10): 7-9.
    Citation: LI Zhi-gang, HU Lan-qing, XU Bing-she. Thermal Fatigue Resistance of Nitrocarburized and Ion Nitrided H13 Steel[J]. Materials and Mechanical Engineering, 2008, 32(10): 7-9.
    shu

    碳氮共渗及离子氮化H13钢的抗热疲劳性能

    Thermal Fatigue Resistance of Nitrocarburized and Ion Nitrided H13 Steel

      摘要
    • 摘要: 分别制备了调质、离子氮化和碳氮共渗处理的H13钢试样,借助X射线衍射仪、扫描电子显微镜和能谱仪对其渗层进行了分析,检测了不同处理后H13钢的抗热疲劳性能.结果表明:经过1 000次18 ℃700 ℃热疲劳试验后,碳氮共渗H13钢表面萌生了少量的热裂纹;而离子氮化H13钢表面的热裂纹已经形成网状,并且穿透渗氮层扩展到基体内约300 μm;经调质处理的H13钢表面的热裂纹有轻微的发展,扩展到基体内约100 μm;三种试样中碳氮共渗处理H13钢的抗热疲劳性能最好.

       

      Abstract: The thermal fatigue resistance of ion nitrided H13 and nitrocarburized H13 was studied.The specimens were analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS).The thermal fatigue resistance was tested.The results showed that after 1 000 cycles of thermal fatigue tests at 700 ℃,the surface of nitrocarburized H13 steel exhibited a small quantity of thermal fatigue cracks,while the thermal fatigue cracks on ion nitrided H13 suface formed network,and expanded into substrate about 300 μm in depth.The thermal fatigue cracks on the original H13 surface expanded slightly and extended into matrix about 100 μm.

       

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