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首页> 外文期刊>Journal of Materials Engineering and Performance >Evaluation of the Effect of Different Plasma-Nitriding Parameters on the Properties of Low-Alloy Steel
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Evaluation of the Effect of Different Plasma-Nitriding Parameters on the Properties of Low-Alloy Steel

机译：不同等离子体氮化参数对低合金钢性能的评价

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摘要

This work is concerned with the surface treatment (ion nitriding) of different plasma-nitriding parameters on the characteristics of DIN 1.8519 low-alloy steel. The samples were nitrided from 500 to 570 degrees C for 540 h using a constant 25% N2-75% H2 gaseous mixture. Lower temperature (500-520 degrees C) favors the formation of compound layers of gamma' and epsilon iron nitrides in the surface layers, whereas a monophase gamma'-Fe4 N layer can be obtained at a higher temperature. The hardness of this layer can be obtained when nitriding is performed at a higher temperature, and the hardness decreases when the temperature increases to 570 degrees C. These results indicate that pulsed plasma nitriding is highly efficient at 550 degrees C and can form thick and hard nitrided layers with satisfactory mechanical properties. The results show the optimized nitriding process at 540 degrees C for 20 h. This process can be an interesting means of enhancing the surface hardness of tool steels to forge dies compared to stamped steels with zinc coating with a reduced coefficient of friction and improving the anti-sticking properties of the tool surface.
机译：这项工作涉及不同等离子体氮化参数的表面处理（离子氮化）对DIN 1.8519低合金钢的特性。使用恒定的25％N 2 -75％H 2气体混合物，将样品从500至570℃氮化540小时。更低的温度（500-520℃）求解在表面层中形成γ'和ε-氧化铁氮化物的复合层，而可以在更高的温度下获得单相γ-Fe4 n层。当氮化在较高温度下进行氮气时，可以获得该层的硬度，并且当温度升高到570℃时，硬度降低。这些结果表明脉冲等离子体氮化在550℃下高效，并且可以形成厚而且坚硬氮化层具有令人满意的机械性能。结果显示540℃的优化氮化过程20小时。与具有锌涂层的冲压钢相比，该过程可以是增强工具钢的表面硬度的有趣手段，其与具有锌涂层的冲压钢，其摩擦系数降低并改善工具表面的抗粘附性能。

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