On the microstructure and high-temperature stability of nano-grained Zircaloy-4

被引：0

作者：

Chen, Lucia ^{[1
,2
]}

Wang, Zhiyang ^{[1
]}

Zhu, Hanliang ^{[1
]}

Burr, Patrick A. ^{[2
]}

Qu, Jiangtao ^{[3
]}

Huang, Yi ^{[4
,5
]}

Balogh, Levente ^{[6
]}

Preuss, Michael ^{[7
]}

Muransky, Ondrej ^{[1
,2
]}

机构：

[1] Australian Nucl Sci & Technol Org ANSTO, Lucas Heights, NSW, Australia

[2] UNSW Sydney, Sch Mech & Mfg Engn, Sydney, NSW, Australia

[3] Univ Sydney, Australian Ctr Microscopy & Microanalysis, Sydney, NSW 2006, Australia

[4] Bournemouth Univ, Fac Sci & Technol, Dept Design & Engn, Poole BH12 5BB, Dorset, England

[5] Univ Southampton, Dept Mech Engn, Mat Res Grp, Southampton, Hants, England

[6] Queens Univ, Mech & Mat Engn, Kingston, ON, Canada

[7] Monash Univ, Clayton, Vic 3800, Australia

来源：

SCRIPTA MATERIALIA | 2022年 / 210卷

关键词：

Zirconium alloys; High-pressure torsion; Microstructure; Stability; HIGH-PRESSURE TORSION; OMEGA-PHASE-TRANSFORMATION; MATERIALS CHALLENGES; PURE ZIRCONIUM; EVOLUTION; ZR; HOMOGENEITY; REFINEMENT; ALPHA;

D O I：

10.1016/j.scriptamat.2021.114410

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A nano-grained microstructure of an alpha-Zr alloy (Zircaloy-4) was produced by high-pressure torsion, which shows evidence of a metastable omega-Zr phase, rather than beta-Zr, determined by combining synchrotron X-ray diffraction and detailed electron microscopy observations. The omega-Zr phase is retained at ambient conditions and shows a new orientation relationship of [(1) over bar 011 ](alpha) // [(1) over bar 100 ](omega) and ((1) over bar 01 (1) over bar)(alpha) // ((1) over bar(1) over bar 20 )(omega) with the alpha-Zr matrix but is thermally unstable, fully reverting back to alpha-Zr phase upon heating above 350 degrees C. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页数：6

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