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The Effect of an Oxide Dispersion on the Critical Al Content in Fe-Al Alloys

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Abstract

Oxide-dispersed iron aluminides with Al contentsranging from 10 to 28 at.% were oxidized in air attemperatures between 600 and 1300°C in order todetermine the critical Al content necessary to form a protective, external alumina scale. AY2O3-Al2O3dispersion, performed similarly to anAl2O3 dispersion, indicated littleeffect of Y on the critical Al content. Compared toingot-processed iron aluminides, the addition of an oxide dispersion reduced thecritical Al content at 900°C. This reduction isattributed to the finer grain size in theoxide-dispersed Fe-Al.

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Authors
  1. B. A. Pint
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  2. J. Leibowitz
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  3. J. H. Devan
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Pint, B.A., Leibowitz, J. & Devan, J.H. The Effect of an Oxide Dispersion on the Critical Al Content in Fe-Al Alloys. Oxidation of Metals 51, 181–197 (1999). https://doi.org/10.1023/A:1018862404800

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