Effect oF Cr, Ni AND C on high temperature oxidation resistance of steels

Maduri Pasala, University of Texas at El Paso

Abstract

The effect of alloying elements on oxidation resistance has been studied using six ferrous alloys with varying Cr, Ni and C contents. The alloys chosen to study the Cr effect were alloys T22, T91, MA956 which have the Cr concentrations of 2.3, 8.6, and 20.0%, respectively. The alloys show that with the increase in the Cr content the activation energy increases which is an indication of higher oxidation resistance. ^ The alloys used to study the Ni effect were MA956, 253MA, Incoloy 800 which have the Ni contents of 0.0, 10.9, and 31.7%, respectively. Oxidation studies on these alloys show that with the increase in the Ni content the activation energy decrease which leads to the decrease in oxidation resistance. ^ The alloys used to study the C effect were MA956, APMT, T91 which have the C contents of 0.0, 0.04, and 0.08%, respectively. Carbon enhances the oxidation in steels and therefore decreases the oxidation resistance. It is based on the results of the oxidation curves and determination of activation energy. ^

Subject Area

Engineering, Metallurgy

Recommended Citation

Pasala, Maduri, "Effect oF Cr, Ni AND C on high temperature oxidation resistance of steels" (2006). ETD Collection for University of Texas, El Paso. AAI1439472.
http://digitalcommons.utep.edu/dissertations/AAI1439472

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