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On the Microstructure and High-Temperature Stability of Nano-Grained Zircaloy-4.

Chen, L., Wang, Z., Zhu, H., Burr, P. A., Qu, J., Huang, Y., Balogh, L., Preuss, M. and Muránsky, O., 2022. On the Microstructure and High-Temperature Stability of Nano-Grained Zircaloy-4. Scripta Materialia, 210 (March), 114410.

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DOI: 10.1016/j.scriptamat.2021.114410

Abstract

A nano-grained microstructure of an α-Zr alloy (Zircaloy-4) was produced by high-pressure torsion, which shows evidence of a metastable ω-Zr phase, rather than β-Zr, determined by combining synchrotron X-ray diffraction and detailed electron microscopy observations. The ω-Zr phase is retained at ambient conditions and shows a new orientation relationship of [-1011] α // [-1100] ω and (-101-1) α // (-1-120) ω with the α-Zr matrix but is thermally unstable, fully reverting back to α-Zr phase upon heating above 350 °C.

Item Type:Article
ISSN:1359-6462
Uncontrolled Keywords:Zirconium alloys; High-pressure torsion; Microstructure; Stability
Group:Faculty of Science & Technology
ID Code:36206
Deposited By: Symplectic RT2
Deposited On:06 Nov 2021 11:09
Last Modified:14 Mar 2022 14:30

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