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Elsevier, Acta Materialia, 18(57), p. 5501-5511, 2009

DOI: 10.1016/j.actamat.2009.07.046

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Texture memory and variant selection during phase transformation of a zirconium alloy

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The texture evolution of cold-rolled Zircaloy-2 sheets during the alpha -> beta ->alpha phase transformation was characterized in situ using high-energy synchrotron X-ray diffraction. It was found that the strong rolling texture is initially modified during heating, evidencing recrystallization, after which it is weakened by a complete phase transformation. Hardly any variant selection was observed during alpha -> beta phase transformation. When the material was rapidly cooled back from above the beta-transus, the alpha texture exhibited moderated variant selection. In a study of the effect of maximum heating temperature on the inherited alpha texture, it was found that incomplete transformations, even with peak temperatures nearing the beta-transus, resulted in a perfect texture memory in spite of dramatic morphological changes in the microstructure. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. ; Times Cited: 5