Abstract
AbstractThe behaviour of austenitic high manganese (19.8%–32.5%)aluminum (7.1%–10.2%) steels in high temperature air has been examined. Tests have been carried out in the 600–900°C temperature range for durations up to 200 h. The steels form a high manganese scale at high oxidation rates; aluminum does not contribute to the formation of this scale. Only a 1.5% silicon bearing steel shows a good oxidation resistance up to 700°C, the oxidation rate being lower because as shown by XPS analyses a silicon‐containing scale is formed. The oxidation resistance of these steels is always lower than that of conventional grades of austenitic stainless steels.
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