Abstract

The chemical and phase compositions and the surface layer structure of a chromium- and aluminum-alloyed nickel-based alloy after quenching, aging, and nitriding in a glow discharge are determined using the results of X-ray diffraction, metallographic, and electron microscopic studies. The sequence of the transformations that occur during nitriding in the precipitation hardening alloy is found on the basis of the data obtained. Boundary conditions for mathematical models of the external (with the formation of a continuous surface layer of nitrides) and internal (when disperse nitride particles form in the diffusion layer) nitriding are developed. A comparison with the experimental data shows the adequacy of the proposed mathematical models.

中文翻译：

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辉光放电中基于镍和铬的合金氮饱和度的建模

摘要

使用X射线衍射，金相和电子显微镜研究的结果确定了铬和铝合金镍基合金在辉光放电中淬火，时效和氮化后的化学和相组成以及表面层结构。根据获得的数据，可以发现在沉淀硬化合金中进行氮化处理时发生的转变顺序。开发了外部（通过形成氮化物的连续表面层）和内部（当在扩散层中形成分散的氮化物颗粒时）氮化的数学模型的边界条件。与实验数据的比较表明所提出的数学模型是足够的。