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Glass-forming ability, thermal properties, and corrosion resistance of Fe-based (Fe, Ni, Mo, Cr)-P-C-B metallic glasses
2017-11-10 22:28  

Wang S, Li Y, Wang X, et al. Journal of Non-Crystalline Solids, 2017, 476: 75-80.

Abstract:

Co-addition of appropriate Mo, Cr and Ni in the Fe80P12C4B4 alloy not only enhances thethermal stability of the supercooled liquid and glass-forming ability (GFA) but also reduces theglass transition temperature (Tg) of the Fe-based metallic glass. The Fe55Ni15Cr7Mo3P12C4B4bulk metallic glass (BMG) exhibits a low Tg of 690 K, large supercooled liquid region (ΔTx) of 60 K, and high GFA with a critical diameter of 2.5 mm. The co-addition of Mo, Cr and Ni remarkably improves the corrosion resistance of the BMGs in 1 M HCl and 0.5 M H2SO4solutions, which is superior compared to the SUS316L stainless steel. The alloys also possess high compressive yield strength of ~ 3.01 GPa with distinct plastic strain of ~ 1.2%. The good combination of low Tg, large ΔTx, high GFA, excellent corrosion resistance and mechanical properties makes the developed (Fe, Ni, Cr, Mo)80P12C4B4 BMGs show great promise as anticorrosion materials suitable for thermoplastic processing.

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