Precipitation of cotunnite-type zirconia induced by deuterium absorption in Zr-4 alloy

被引：1

作者：

Zhang, Cheng ^{[1
]}

Yang, Yun ^{[1
]}

Zhang, Yin ^{[1
]}

Liu, Jingru ^{[1
]}

You, Li ^{[1
]}

Song, Xiping ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

SCRIPTA MATERIALIA | 2018年 / 143卷

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Cotunnite-type zirconia; Deuterium absorption; TEM; Zr-4; alloy; HYDRIDE; HYDROGEN; PHASE; REORIENTATION; 20-DEGREES-C; DIFFRACTION; TRANSITION; ZIRCALOY-4; CORROSION; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2017.08.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cotunnite-type zirconia was first observed to precipitate from Zr-4 alloy after deuterium absorption. The acicular cotunnite-type zirconia (OII-ZrO2) precipitated at the interface of delta deuterides, followed by an orientation relationship of [01 (1) over bar](OII)//[011](delta) and (100)(OII)//(11 (1) over bar)(delta) with delta deuterides. High -resolution transmission electron microscopy observations indicated that some steps existed at the delta/ZrO2 interface, together with the appearance of dislocations in the delta deuteride side. A model of the formation of cotunnite-type ZrO2 at the interface of delta deuterides was proposed. The effects of volume strain and crystal structure on the precipitation of cotunnite-type ZrO2 were also analyzed. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

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