A reconsideration of phase relations in the Ti-Al-Mo and Ti-Al systems

Banerjee, D and Krishnan, RV and Vasu, KI (1980) A reconsideration of phase relations in the Ti-Al-Mo and Ti-Al systems. In: Metallurgical and Materials Transactions A, 11 (7). pp. 1095-1105.

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Abstract

A microstructural and X-ray investigation of Ti-AI-Mo alloys Ti-31 Al-15 Mo, Ti-31 Al-13 Mo, Ti-31Al-9Mo and Ti-35Al-9Mo (containing the Ti3Al, TiAl and β phases) indicates that the existing phase diagram of the ternary system for this composition range published by Ge Dhzhi-Min and Pylaeva is in error above 1473 K. An analysis of phase relations reveals that the error has arisen from their use of the Ti-AI diagram due to Bumps, Kessler and Hansen as a basis for generating the ternary. It is shown that a phase diagram of the ternary, consistent with the experimental results, can be generated using a version of the Ti-AI system due to Margolin. Simple geometric arguments are used to build up a new semi-quantitative description of the Ti-AI-Mo system which can be used as a basis for a detailed investigation of phase equilibria in this system.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	06 Feb 2010 11:31
Last Modified:	19 Sep 2010 05:36
URI:	http://eprints.iisc.ernet.in/id/eprint/21317

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