Microstructure, corrosion behavior and hydrogen evolution of USSP processed AZ31 magnesium alloy with a surface layer containing amorphous Fe-rich composite

被引：10
|
作者：
Lin, Bin [1 ]
Zhang, Jianyue [2 ]
Sun, Qingqing [1 ]
Han, Jinhua [1 ]
Li, Huabing [1 ]
Wang, Shuai [1 ]
机构：
[1] Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
[2] Purdue Univ, Sch Engn Technol, W Lafayette, IN 47907 USA
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 17期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
USSP; Amorphous; Corrosion; Hydrogen; Nanograins;
D O I：
10.1016/j.ijhydene.2020.12.132
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of ultrasonic shot peening (USSP) treatment on the microstructure, corrosion behavior and hydrogen evolution of AZ31 magnesium alloy is investigated. An Fe-rich composite in amorphous state is introduced on the surface layer. Microstructure results indicate that nanoscale grains are formed on the surface layer after USSP treatment. Comparing to the untreated AZ31, the charge transfer resistance of the USSP-treated sample decreases by similar to 410 times and the hydrogen evolution rate increases by similar to 64 times. The acceleration of corrosion rate is attributed to the micro-galvanic interaction between the nanocrystalline Mg matrix and amorphous Fe-rich composite. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：10172 / 10182
页数：11
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