Phase Stability of Sigma + Beta Microstructures in the Ternary Nb-Ti-Al System-Reference-Cited by-同舟云学术

Phase Stability of Sigma + Beta Microstructures in the Ternary Nb-Ti-Al System

Published:1990 Issue: Volume:194 Page:
ISSN:0272-9172
Container-title:MRS Proceedings
language:en
Short-container-title:MRS Proc.

Author:

Hoelzer D. T.,Ebrahimi F.

Abstract

AbstractAn alloy with the nominal composition 42Nb-28Ti-30Al (at.%) was heat treated in the sigma + beta phase region. The evolution of σ phase from the metastable β phase and the stability of the two-phase microstructure at various aging temperatures were evaluated using TEM techniques. The results indicate that the β phase in equilibrium with the σ phase at high temperatures decomposes to the orthorhombic phase at temperatures below 1200°C.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

Reference9 articles.

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2. 2. Bendersky L.A. and Boettinger W.J. , in High Temperature Ordered Intermetallic Alloys, edited, edited by Koch C.C. , Liu C.T. , Stoloff N.S. , and Taub A.I. , Mater. Res. Soc. Proc. 133, (1989), p. 45.

3. 1. Castillo J. , Hoelzer D.T. , Kim Y.S. , and Ebrahimi F. , To be published in “High Temperature Aluminides and Intermetallics”, ASM/TMS-AIME Fall Meeting in Indianapolis, Ind., 1989.

4. 4. Perepezko J.H. , Chang Y.A. , Seitzman L.E. , Lin J.C. , Bonda N.R. , Jewitt T.J. , and Mishurda J.C. , To be published in “High Temperature Aluminides and Intermetallics”, ASM/TMS-AIME Fall Meeting in Indianapolis, Ind., 1989.

5. A new ordered orthorhombic phase in a Ti3AlNb alloy

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