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Abstract FeMnSiCrNi alloys present good properties, although the oxidation resistance at high temperatures is limited by high manganese amount. Thus, the present study evaluated a vacuum annealing treatment on an… Click to show full abstract
Abstract FeMnSiCrNi alloys present good properties, although the oxidation resistance at high temperatures is limited by high manganese amount. Thus, the present study evaluated a vacuum annealing treatment on an Fe-17Mn-5Si-10Cr-4Ni-VC alloy as a surface modification method, aiming to improve oxidation resistance. The treatment was performed during 10 h at 1100 °C, generating an external ferrite layer of 170 μm in thickness (manganese decreased to 2 wt%). Oxidation tests at 800 °C up to 24 h in untreated and vacuum treatment demonstrated that heat treatment decreased the mass gain rate in two orders of magnitude through more protective oxide formation.
Journal Title: Materials Letters
Year Published: 2019
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