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Effect of Forging Temperature on Microstructure and Tensile Properties in Fe3Al-Based Alloy

Published online by Cambridge University Press:  22 February 2011

Y. Yang ,
W. Yan ,
J. N. Liu  and
S. Hanada
Y. Yang
Affiliation:
Department of Materials Science, Xi’an Institute of Technology, Xi’an, China
W. Yan
Affiliation:
Department of Materials Science, Xi’an Institute of Technology, Xi’an, China
J. N. Liu
Affiliation:
Department of Materials Science, Xi’an Institute of Technology, Xi’an, China
S. Hanada
Affiliation:
Institute for Materials Research, Tohoku University, Sendai, Japan
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Abstract

Forging processes at two different temperatures are performed to examine the relation between the microstructure and room temperature tensile properties in a Ce doped Fe3Al-based alloy. Results show that the microstructure and the ductility are sensitive to the forging temperature before annealing treatment. Higher yield strength and ductility can be obtained through forging at a relatively low temperature of 750°C followed by annealing at 800°C and 500°C. It is suggested that the formation of non-equilibrium grain boundaries and banded subgrains within carbide-free areas along grain boundaries enhances the local plastic deformation and results in the improvement of ductility. During the initial deformation at room temperature <111> slip is predominant for both microstructures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 121
Copyright
Copyright © Materials Research Society 1995

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