Evolution of "Spinodal decomposition"-like structures during the oxidation of Zr(Fe,Nb)2 under subcritical environment

被引：16
作者：
Ren, Yingying [1 ,2 ]
Yao, Hanghang [1 ,2 ]
Hu, Junhua [1 ,2 ]
Cao, Guoqin [1 ,2 ]
Tian, JiaJia [1 ,2 ]
Pan, Jimin [1 ]
机构：
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
[2] Zhengzhou Univ, State Ctr Int Cooperat Designer Low Carbon & Envi, 100 Kexue Ave, Zhengzhou 450001, Peoples R China
来源：
SCRIPTA MATERIALIA | 2020年 / 187卷
基金：
中国国家自然科学基金;
关键词：
Laves phases; HREM; Oxidation; Diffusion; Spinodal decomposition; LAVES-PHASE; CRYSTAL-STRUCTURE; DEGREES-C; ZIRCALOY-4; CORROSION; ALLOY; FE; MICROSTRUCTURE; OXYGEN; NB;
D O I：
10.1016/j.scriptamat.2020.06.018
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
As an important precipitate in Zr-alloy, detailed study on the oxidation behavior of Zr(Fe,Nb)(2) in atomic scale will help to develop safer materials for reactors. In this study, Zr(Fe,Nb)(2) intermetallic was fabricated and exposed to subcritical water (320 degrees C, 15.5 MPa). On oxidation frontier, the interplay between element diffusion and structure evolution was analyzed. The oxidation process started with the incorporation of oxygen in local strips, which was perpendicular to the direction of oxygen diffusion. Fe was segregated from the oxygen-rich strips via an uphill diffusion process along {001} lattice plane. The "spinodal decomposition"-like phenomenon was observed and discussed. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：107 / 112
页数：6
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