Effects of temperature and alloying content on the phase transformation and 10(1)over-bar1 twinning in Zr during rolling

XL An and H Zhang and S Ni and XQ Ou and XZ Liao and M Song, JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 41, 76-80 (2020).

DOI: 10.1016/j.jmst.2019.09.022

The effects of temperature and Ti content on the deformation mechanisms of pure Zr and Zr-Ti alloys were investigated by transmission electron microscopy. The results indicate the existence of a relation between deformation-induced phase transformation from a hexagonal close-packed structure to a face-centered cubic structure and 10 (1) over bar1 deformation twinning. That is, when one is suppressed, the other will be promoted. The phase transformation was suppressed while the 10 (1) over bar1 compressive twinning was promoted with increasing the rolling temperature and/or Ti content. This can be attributed to the activation of basal dislocations at high temperature and the increased stacking fault energy with Ti content. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

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