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Structures and Properties of Gamma-Tial Alloys Containing Interstitial Elements

Published online by Cambridge University Press:  26 February 2011

S.C. Huang  and
E.L. Hall
S.C. Huang
Affiliation:
General Electric Corporate Research and Development, Bldg. K1, MB275, Pobox 8, Schenectady, NY 12301
E.L. Hall
Affiliation:
General Electric Corporate Research and Development, Bldg. K1, MB275, Pobox 8, Schenectady, NY 12301
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Abstract

This paper reports on the effects of carbon, nitrogen, boron, and oxygen on the microstructure and properties of gamma-TiAl alloys. It has been found that nitrogen and boron are capable of altering the solidification structure, whereas the others are not. The additions of >1 at.% B or 0.5 at.% N changed the cast structure from columnar to equiaxed with fine grain sizes. As a result, the strength has been significantly increased. Additional results on phase and structural stabilities will be presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 827
Copyright
Copyright © Materials Research Society 1991

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References

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