In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Genghua Cao; Datong Zhang; Weiwen Zhang; Wen Zhang

doi:10.3390/ma9070542

In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Materials (Basel). 2016 Jul 7;9(7):542. doi: 10.3390/ma9070542.

Authors

Genghua Cao¹, Datong Zhang², Weiwen Zhang³, Wen Zhang⁴

Affiliations

¹ National Engineering Research Center of Near-Net Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China. cghcaogenghua@126.com.
² National Engineering Research Center of Near-Net Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China. dtzhang@scut.edu.cn.
³ National Engineering Research Center of Near-Net Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China. mewzhang@scut.edu.cn.
⁴ National Engineering Research Center of Near-Net Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, Guangdong, China. jack_eei@scut.edu.cn.

Abstract

Corrosion behavior of friction stir processing (FSP) WE43 alloy in a simulated body fluid (SBF) was investigated. Micro-galvanic corrosion was the dominated corrosion behavior, and the corrosion resistance of FSP WE43 alloy was improved compared to the cast counterpart. Furthermore, due to the fine-grained and homogeneous microstructure, uniform corrosion morphology was observed on FSP WE43 alloy. According to the tensile properties of specimens with different immersion time intervals, FSP WE43 alloy shows better performance to maintain the mechanical integrity in SBF as compared to the as-cast alloy.

Keywords: WE43 magnesium alloy; corrosion behavior; friction stir processing; mechanical properties.