This article deals with the subject of layers produced in a hybrid process combining hardfacing and nitriding. These layers are characterized by improved resistance to wear, which arises from the synergy between favorable materials during hardfacing and nitriding treatment. Tests were conducted on hot-work tool steel (H11) samples. Hardfaced layers consisting of three layers were applied to these samples, where layers were made from two materials—Robotool 46 and Hardface VMolc powder wires. Next, samples of both materials were nitrided using ZeroFlow gas nitriding technology, with control of potential aimed at obtaining a diffusion layer without a white zone of nitrides on the surface. The next step was to investigate the properties of hardfaced layers and of layers hardfaced after nitriding treatment. Conducted tests covered observations of the microstructure, microhardness measurements as a function of distance from the surface, measurement of stresses in the surface layer by means of X-ray diffraction, and tribological tests. Obtained test results show that hybrid layers combining hardfacing and nitriding may be suitable for improving the lifetime of tools applied in hot forging processes.

中文翻译：

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结合了堆焊和渗氮的新一代混合层的性能，旨在改善锻造工具的耐用性

本文讨论了在结合了表面硬化和渗氮的混合工艺中生产的层的主题。这些层的特征在于改进的耐磨性，这是由于在堆焊和氮化处理过程中有益材料之间的协同作用而产生的。对热作工具钢（H11）样品进行了测试。由三层组成的硬面层应用于这些样品，其中的层由两种材料制成：Robotool 46和Hardface VMolc粉末焊丝。接下来，使用ZeroFlow气体氮化技术对两种材料的样品进行氮化，控制电位的目的是获得在表面上没有氮化物白色区域的扩散层。下一步是研究渗碳层和渗氮处理后的渗碳层的性能。进行的测试涵盖了微观结构的观察，作为距表面距离的函数的显微硬度测量，通过X射线衍射测量表面层中应力的方法以及摩擦学测试。获得的测试结果表明，结合了堆焊和渗氮的混合层可能适合延长热锻过程中使用的工具的寿命。