The Effect of Temperature on the Microstructure of a Metastable β Ti Alloy

Abstract:

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A metastable β titanium alloy, BTi-6554 (Ti-6Cr-5Mo-5V-4Al) has been developed for structural applications in aircraft because of its high strength, high toughness, and good fatigue properties. This paper reports on the effect of heat treatment on microstructure and microhardness of the alloy. It has been shown that in the as hot rolled condition, the alloy consists of a single β phase. Heat treatment between 450-750°C results in the precipitation of α laths, while exposure to temperatures between 700-800°C results in the gradual transformation of the α phase back to β phase with larger grain sizes resulting from higher heat treatment temperatures.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

847-850

DOI:

10.4028/www.scientific.net/MSF.654-656.847

Citation:

G. Wang et al., "The Effect of Temperature on the Microstructure of a Metastable β Ti Alloy", Materials Science Forum, Vols. 654-656, pp. 847-850, 2010

Online since:

June 2010

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Price:

$35.00

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