Evolution of Twin-Related Variants of α Phase in a Ti-V-Cu Alloy

Abstract:

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The precipitation of a-phase has been investigated in a concentrated b-alloy of the Ti-V-Cu system. a-precipitates in geometrically coupled forms were developed in the alloy when subject to isothermal ageing at 500°C. High-resolution transmission electron microscopy (HRTEM) revealed that a-phase embryos tend to nucleate in a symmetrical manner directly from an early-stage solute-partitioned diffusional product. The a-precipitates so developed constitute twin-related variants characterized by a twin plane lying on one of the {0111}a planes. The results are discussed with respect to the role of Cu on the formation of heterogeneous nucleation sites for a-phase.

Info:

Periodical:

Solid State Phenomena (Volumes 172-174)

Edited by:

Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson

Pages:

481-486

DOI:

10.4028/www.scientific.net/SSP.172-174.481

Citation:

H. P. Ng et al., "Evolution of Twin-Related Variants of α Phase in a Ti-V-Cu Alloy", Solid State Phenomena, Vols. 172-174, pp. 481-486, 2011

Online since:

June 2011

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Price:

$35.00

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