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The Formation of A2/L21 Microstructure in Fe-Al-Ti-Cr Alloys

Published online by Cambridge University Press:  04 February 2011

Suguru Hotta
Affiliation:
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, JAPAN
Satoru Kobayashi
Affiliation:
Osaka Center for Industrial Materials Research, Institute for Materials Research, Tohoku University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, JAPAN
Takayuki Takasugi
Affiliation:
Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, JAPAN Osaka Center for Industrial Materials Research, Institute for Materials Research, Tohoku University, 1-1Gakuen-cho Naka-ku, Sakai, Osaka 599-8531, JAPAN
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Abstract

The composition areas of the A2/L21 two-phase field in the Fe-Al-Ti-Cr quaternary system at 800 ºC and 700 ºC were investigated using a diffusion-multiple (DM) technique for which Fe-30Al-7Ti, Fe-30Cr-7Ti and Fe-7Ti alloys were diffusion-coupled and heat-treated. The A2/L21 two-phase field was found to expand slightly toward lower Al content when the Cr content is increased. The field is slightly shifted toward lower Al content when the temperature is decreased.

Type
Research Article
Copyright
Copyright © Materials Research Society 2011

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References

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