Abstract
In this article, the Fe62Cr8Nb4Mo4(C,B)22 steel glass was produced using inexpensive pig iron as the main master alloy, with minor addition of commercially available ferrous alloys. The fully vitreous nature of the steel produced by melt-spinning was confirmed through X-ray diffraction, from conventional and synchrotron radiation sources, and transmission electron microscopy. Differential scanning calorimetry confirmed the glass transition temperature of approximately 553 °C, and the onset of the crystallization at 574 °C, with supercooled liquid temperature interval of 21 °C. The Fe62Cr8Nb4Mo4(C,B)22 steel glass proved to be harder than the pig iron (1070 vs. 666 HV0.1, respectively) and more stable in chloride-rich medium than the 444 stainless steel, as assessed by the passivation window prior to pit corrosion (1253 vs. 738 mV, respectively) and the ease reprotection upon the reverse scan. The results contribute to the strategies for production of affordable hard and corrosion-resistant steel glasses for demanding applications.
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