| 引用本文: | 曹驰,张春华,陈志林,张翔,张果林.温度对Hastelloy C-276镍基合金离子碳氮共渗组织与性能影响[J].材料科学与工艺,2025,33(2):27-34.DOI:10.11951/j.issn.1005-0299.20230214. |
| CAO Chi,ZHANG Chunhua,CHEN Zhilin,ZHANG Xiang,ZHANG Guolin.Effect of temperature on the microstructure and properties of Hastelloy C-276 nickel base alloy with ion carbonitriding coating[J].Materials Science and Technology,2025,33(2):27-34.DOI:10.11951/j.issn.1005-0299.20230214. |
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| 摘要: |
| 探究温度对镍基合金Hastelloy C-276渗层显微组织、力学性能、摩擦磨损性能以及耐蚀性能的影响规律,以期获得硬度、耐磨性和耐蚀性优良的表面改性层。使用等离子碳氮共渗技术在不同温度(395、425、455、485 ℃)下制备表面改性层,镍基合金C-276经离子碳氮共渗后,渗层厚度从6.5到20.0 μm不等,表面硬度较原始合金均有不同程度提高。当处理温度≤395 ℃时生成的S相层较薄；随着处理温度升高,生成较厚的S相层和CrN硬质相,获得优良的耐磨性；进一步提升处理温度至485 ℃时,基体表面出现贫Cr,致使合金耐蚀性降低；当处理温度<450 ℃时样品表现出比基体更好的耐蚀性能。镍基合金Hastelloy C-276在425、455 ℃温度下进行碳氮共渗,可获得硬度、耐磨性和耐蚀性相对优良的表面改性层。 |
| 关键词: 碳氮共渗 Hastelloy C-276镍基合金 S相 温度 耐磨性 |
| DOI：10.11951/j.issn.1005-0299.20230214 |
| 分类号:TG156.8+2 |
| 文献标识码:A |
| 基金项目:甘肃省重点研发计划(20YF8GA058)；温州市工业科技项目(ZG20211003). |
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| Effect of temperature on the microstructure and properties of Hastelloy C-276 nickel base alloy with ion carbonitriding coating |
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CAO Chi1,2, ZHANG Chunhua1, CHEN Zhilin2, ZHANG Xiang1, ZHANG Guolin2
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(1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2.Wenzhou Pump and Valve Engineering Research Institute, Lanzhou University of Technology, Wenzhou 325105, China)
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| Abstract: |
| In order to obtain a surface modified layer with excellent hardness, wear resistance and corrosion resistance, the influence of temperature on the microstructure, mechanical properties, tribological properties, and corrosion resistance of the ion carbonitriding coating on Hastelloy C-276 nickel base alloy was investigated.The surface modified layer was prepared by plasma carbonitriding technology at different temperatures (395, 425, 455, 485 ℃). After ion carbonitriding treatment, the thickness of the ion carbonitriding coatings ranged from 6.5 to 20.0 μm, and the surface hardness was higher than that of the original alloy. When the temperature was ≤395 ℃, the S-phase layer generated was relatively thin. As the processing temperature increased, a mixture layer of thicker S phase and CrN phase were formed, leading to excellent wear resistance. However, with further increase in the treatment temperature to 485 ℃, the poor Cr phenomenon in the matrix occurred on the alloy surface, reducing its corrosion resistance. The samples treated below 450 ℃ showed better corrosion resistance than that of the substrate.The Hastelloy C-276 nickel-base alloy carbonitrided at 425 ℃ and 455 ℃ showed superior surface-modified layers in terms of excellent hardness, wear resistance and corrosion resistance. |
| Key words: carbonitriding Hastelloy C-276 nickel base alloy S-Phase temperature wear resistance |
