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Microstructure of Titanium-Aluminides after Thermomechanical Treatment

Published online by Cambridge University Press:  26 February 2011

J. Seeger ,
C. Hartig ,
A. Bartels  and
H. Mecking
J. Seeger
Affiliation:
Technische Universität Hamburg-Harburg, Werkstoffphysik und -technologie Eiβendorfer Str. 42, W-2100 Hamburg 90, Federal Republic of Germany
C. Hartig
Affiliation:
Technische Universität Hamburg-Harburg, Werkstoffphysik und -technologie Eiβendorfer Str. 42, W-2100 Hamburg 90, Federal Republic of Germany
A. Bartels
Affiliation:
Technische Universität Hamburg-Harburg, Werkstoffphysik und -technologie Eiβendorfer Str. 42, W-2100 Hamburg 90, Federal Republic of Germany
H. Mecking
Affiliation:
Technische Universität Hamburg-Harburg, Werkstoffphysik und -technologie Eiβendorfer Str. 42, W-2100 Hamburg 90, Federal Republic of Germany
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Abstract

Forging in the α2+γ-phase field results in grain refined zones by dynamic recrystallization, but still coarse γ-grains and a residual amount of α2/γ-lamellae are observed. During subsequent heat treatment in the α+γ-phase field the recrystallization leads to inhomogeneous distributions of α2-Ti3Al and grain sizes of γ-TiAl. Due to these inhomogeneities a significant increase of the room temperature ductility is not found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 157
Copyright
Copyright © Materials Research Society 1991

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References

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