Open AccessHigh Temperature Behavior of Superalloy under Simulating Gas Turbine Environment
Author(s) -
Chella Ganesh. D,
M. Adamkhan,
Winowlin Jappes JT
Publication year - 2019
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.a1065.1291s419
Subject(s) - superalloy , materials science , metallurgy , corrosion , gas turbines , degradation (telecommunications) , high temperature corrosion , alloy , mechanical engineering , telecommunications , computer science , engineering
On prolonged exposure of superalloys at elevated temperature, the surface degradation is prone to involve. In this study two nickel – based superalloys, Inconel617 and Hastelloy are the materials used to perform surface studies. The behaviors of superalloys at elevated temperatures are studied with and without salt mixture. Samples are exposed at 900° and 1000°C for a period of fifty hours. From the investigation, the cumulative mass changes per unit area are calculated with reference to the proportion of surface scale formation. The substantial role of the alloying elements is analyzed through SEM and XRD analysis. The Hastelloy has better resistance towards corrosion and oxidation resistance than Inconel617. The predominant oxides formed during the exposure at high temperature have a major contribution towards the protection of the samples.