Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

Yanan Cui; Yonghai Wang; Zhongyu Cui; Wenlong Qi; Jidong Wang; Pengfei Ju; Yang Zhao; Bin Liu; Tao Zhang; Fuhui Wang

doi:10.3390/ma13163651

Materials (Aug 2020)

Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

Yanan Cui,
Yonghai Wang,
Zhongyu Cui,
Wenlong Qi,
Jidong Wang,
Pengfei Ju,
Yang Zhao,
Bin Liu,
Tao Zhang,
Fuhui Wang

Affiliations

Yanan Cui: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology, Harbin Engineering University, Ministry of Education, Harbin 150001, China
Yonghai Wang: Technical Office Department, Beijing Institute of Space Long March Vehicle, Beijing 100076, China
Zhongyu Cui: School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
Wenlong Qi: Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
Jidong Wang: Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
Pengfei Ju: Shanghai Aerospace Equipment Manufacture, Shanghai 200245, China
Yang Zhao: Shenyang National Laboratory for Materials Science, Northeastern University, Shenyang 110819, China
Bin Liu: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology, Harbin Engineering University, Ministry of Education, Harbin 150001, China
Tao Zhang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology, Harbin Engineering University, Ministry of Education, Harbin 150001, China
Fuhui Wang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology, Harbin Engineering University, Ministry of Education, Harbin 150001, China

DOI: https://doi.org/10.3390/ma13163651
Journal volume & issue: Vol. 13, no. 16
p. 3651

Abstract

Read online

The influence of rare earth element (RE) Y on the microstructure and corrosion behavior of extruded AZ91 Mg alloy was surveyed via morphology characterization and corrosion performance measurements. The results indicate the corrosion resistance of the transversal section of AZ91 Mg alloy containing Y was improved compared with AZ91 Mg alloy without Y. The corrosion resistance of the longitudinal section of AZ91 Mg alloy with Y was lower than that of AZ91 Mg alloy without Y. The change of corrosion resistance can be attributed to the dispersion and volume fraction of the second phase, the effect of cathodic reduction rate, and the refined second phase.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

About the journal

Abstract

Keywords