Oxide Layers on （0001） Plane of Zircaloy-4 After Corrosion at 360 ℃ in Lithiated Aqueous Solution

The microstructures of the oxide layers formed on near （0001） plane of Zircaloy-4 were investigated by autoclave tests at 360 ℃ in lithiated aqueous solution. Oxygen-rich regions with hcp structure were observed at the undulating O/M interface, and the inner surface morphology of the oxide layers fo...

Full description

Saved in:
Bibliographic Details
Published in:金属学报：英文版 2015 (6), p.748-757
Main Author: Shao-Qiu Gou Bang-Xin Zhou Mei-Yi Yao Jian-Chao Peng Chuan-Ming Chen Qiang Li Jin-Long Zhang
Format: Article
Language:English
Subjects:
微观结构
氧化物
水溶液
腐蚀
金属基体
锂化
锆-4合金
高压釜试验
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The microstructures of the oxide layers formed on near （0001） plane of Zircaloy-4 were investigated by autoclave tests at 360 ℃ in lithiated aqueous solution. Oxygen-rich regions with hcp structure were observed at the undulating O/M interface, and the inner surface morphology of the oxide layers formed on （0001） was only concave- convex. Monoclinic, tetragonal and cubic phases and a kind of zirconium sub-oxide with bcc structure were detected in the oxide layer near the metal matrix. This zirconium sub-oxide layer had a coherent relationship with a-Zr matrix, and the growth direction of the zirconium sub-oxide layer was nearly parallel to the [0001] direction of a-Zr regardless of the orientation of metal matrix. The orientations scattering of columnar grains formed on near （0001） plane differ from that formed on near （1010） plane.
ISSN:1006-7191
2194-1289