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| 离子氮碳共渗与离子渗氮复合处理对45钢组织与性能的影响 |
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缪斌1, 李景才2,3, 孙泉1, 沾宪宪2,4, 胡静1,2
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1.常州大学江苏省表面工程科学与技术重点实验室, 江苏 常州 213164;2.常州大学江苏省光伏科学与工程协同创新中心, 江苏 常州 213164;3.常州赛菲斯科技有限公司江苏常州 213164;4.天龙科技炉业(无锡)有限公司, 江苏 无锡 214105
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| 摘要: |
| 为进一步提高渗层厚度及渗层性能，对45钢进行离子氮碳共渗与离子渗氮复合处理。采用扫描电镜、X射线衍射仪、显微硬度计和光学显微镜对渗层厚度、物相组成、截面与表面硬度、渗层脆性进行了分析。结果表明，复合处理可使45钢获得比单一离子渗氮或离子氮碳共渗更快的渗速、更优的性能。相同的处理时间下，复合处理渗层厚度比单一离子渗氮或离子氮碳共渗大幅度增加，有效硬化层比单一离子渗氮增加约35 μm，提高约1倍，同时渗层脆性显著降低。物相分析表明复合处理后化合物层中ε相和γ'相的相对含量发生了变化，即ε相增多，而γ'相减少。 |
| 关键词: 离子氮碳共渗 45钢 离子渗氮 化合物层 显微硬度 |
| DOI：10.11933/j.issn.1007-9289.2016.04.004 |
| 分类号: |
| 基金项目:江苏省科技支撑计划资助项目（BE2012054）；江苏省研究生创新基金（SCZ100431322） |
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| Effects of Complex Treatment of Plasma Nitrocarburizing and Plasma Nitriding on Microstructure and Properties of 45 Steel |
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MIAO Bin1, LI Jing-cai2,3, SUN Quan1, ZHAN Xian-xian2,4, HU Jing1,2
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1.Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, Jiangsu;2.Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu;3.Changzhou SAI FEI SI Science and Technology Co. Ltd., Changzhou 213164, Jiangsu;4.Tlon Technical Furnaces(Wuxi) Co. Ltd., Wuxi 214105, Jiangsu
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| Abstract: |
| To further enhance the compound layer thickness and its properties, a complex treatment of plasma nitrocarburizing and nitriding was carried out for 45 steel. The thickness, phase constituents, cross-sectional and surface microhardness, and frangibility of the nitrided layer were investigated by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness tester and optical microscope (OM). The results show that higher efficiency and better properties are obtained after the complex treatment for 45 steel. The nitrided layer thickness is increased significantly, and the effective hardening layer increased above 35 μm, nearly doubled. Meanwhile, the frangibility of the nitrided layer is decreased notably. The relative amount of ε phase in the compound layer is increased, but that of γ' is reduced. |
| Key words: plasma nitrocarburizing 45 steel plasma nitriding compound layer microhardness |