Silicide formation in Ti-3Al-8V-6Cr-4Zr-4Mo

Ankem, S. ; Banerjee, D. ; McNeish, D. J. ; Williams, J. C. ; Seagle, S. R. (1987) Silicide formation in Ti-3Al-8V-6Cr-4Zr-4Mo Metallurgical and Materials Transactions A, 18 (12). pp. 2015-2025. ISSN 1073-5623

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TEM, including convergent beam electron diffraction (CBED), SEM, and EDX techniques, were used to] characterize the silicide (Ti, Zr)5 Si3 which forms in Beta-C (Ti-3Al-8V-6Cr-4Zr-4Mo) and other similar titanium alloys. Space group of this silicide is determined as P6/mmm. In addition, solvus of this silicide was determined and a complete phase field diagram was constructed for Beta-C alloy. It was found that morphology and distribution of the silicide strongly depends on thermal and thermomechanical treatments. Continuous grain boundary silicide was found to be detrimental for tensil ductility which results in intergranular fracture. Thermal and thermomechanical treatments were identified which can reduce or eliminate continuous grain boundary silicide precipitation.

Item Type:Article
Source:Copyright of this article belongs to The Minerals, Metals & Materials Society.
ID Code:62987
Deposited On:24 Sep 2011 15:10
Last Modified:24 Sep 2011 15:10

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