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Microstructure and corrosion behavior of FeCrNiMnMox high‐entropy alloys fabricated by the laser surface remelting
Materials and Corrosion ( IF 1.6 ) Pub Date : 2020-05-25 , DOI: 10.1002/maco.202011674 Jinkang Hu 1 , Ying Liu 1 , Wei Li 1
Materials and Corrosion ( IF 1.6 ) Pub Date : 2020-05-25 , DOI: 10.1002/maco.202011674 Jinkang Hu 1 , Ying Liu 1 , Wei Li 1
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In this study, an Nd:YAG laser was used to carry out laser surface remelting treatment on FeCrNiMnMox (x = 0, 0.5, 1) alloys. A study was conducted on the potential impact of Mo on the microstructure and corrosion resistance of the laser‐remelted layer. According to the research results, FeCrNiMnMox alloys were more effective in refining the dendrites, compared with the matrix, whereas the FeCrNiMn alloys' remelted layer exhibited an almost single face‐centered cubic (FCC) structure. In comparison, FeCrNiMnMo0.5 and FeCrNiMnMo1 alloys' remelted layer displayed the FCC and σ phase. In addition, the dendrite crystals' microstructure can be clearly refined by Mo alloying. Mo is effective in improving the corrosion resistance of the FeCrNiMnMox alloys' remelted layer in 3.5% NaCl solution. The pitting resistance of Mo‐containing‐remelted layers is significantly higher, compared with Mo‐free alloy's remelted layer, and the FeCrNiMnMo0.5‐remelted layer shows the most satisfactory corrosion resistance. As revealed by X‐ray photoelectron spectroscopy analyses, the addition of molybdenum promotes the generation of Cr2O3 and enhances the corrosion resistance of the remelted layer.
中文翻译：
激光表面重熔制备的FeCrNiMnMox高熵合金的组织和腐蚀行为
在这项研究中，使用Nd：YAG激光对FeCrNiMnMo x（x = 0，0.5，1 ）合金进行激光表面重熔处理。进行了一项研究，研究了Mo对激光重熔层的微观结构和耐蚀性的潜在影响。根据研究结果，与基体相比，FeCrNiMnMo x合金在细化枝晶方面更有效，而FeCrNiMn合金的重熔层表现出几乎单面中心立方（FCC）结构。相比之下，FeCrNiMnMo 0.5和FeCrNiMnMo 1合金的重熔层显示出FCC和σ相。另外，通过钼合金化可以清楚地细化枝晶晶体的微观结构。Mo可有效改善FeCrNiMnMo x合金在3.5％NaCl溶液中的重熔层的耐腐蚀性。与不含Mo的合金的重熔层相比，含Mo的重熔层的耐点蚀性要高得多，FeCrNiMnMo 0.5的重熔层表现出最令人满意的耐蚀性。正如X射线光电子能谱分析所揭示的，钼的添加促进了Cr 2 O 3的生成并增强了重熔层的耐腐蚀性。
更新日期：2020-05-25
中文翻译：
激光表面重熔制备的FeCrNiMnMox高熵合金的组织和腐蚀行为
在这项研究中，使用Nd：YAG激光对FeCrNiMnMo x（x = 0，0.5，1 ）合金进行激光表面重熔处理。进行了一项研究，研究了Mo对激光重熔层的微观结构和耐蚀性的潜在影响。根据研究结果，与基体相比，FeCrNiMnMo x合金在细化枝晶方面更有效，而FeCrNiMn合金的重熔层表现出几乎单面中心立方（FCC）结构。相比之下，FeCrNiMnMo 0.5和FeCrNiMnMo 1合金的重熔层显示出FCC和σ相。另外，通过钼合金化可以清楚地细化枝晶晶体的微观结构。Mo可有效改善FeCrNiMnMo x合金在3.5％NaCl溶液中的重熔层的耐腐蚀性。与不含Mo的合金的重熔层相比，含Mo的重熔层的耐点蚀性要高得多，FeCrNiMnMo 0.5的重熔层表现出最令人满意的耐蚀性。正如X射线光电子能谱分析所揭示的，钼的添加促进了Cr 2 O 3的生成并增强了重熔层的耐腐蚀性。
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