Effects of Deformation Texture and Grain Size on Corrosion Behavior of Mg-3Al-1Zn Alloy Sheets

Da-Wei Li; Hui-Yuan Wang; Dong-Song Wei; Zheng-Xue Zhao; Yan Liu

doi:10.1021/acsomega.9b03009

Effects of Deformation Texture and Grain Size on Corrosion Behavior of Mg-3Al-1Zn Alloy Sheets

ACS Omega. 2020 Jan 15;5(3):1448-1456. doi: 10.1021/acsomega.9b03009. eCollection 2020 Jan 28.

Authors

Da-Wei Li^{1

2}, Hui-Yuan Wang^{1

2}, Dong-Song Wei^{1

2}, Zheng-Xue Zhao^{1

2}, Yan Liu³

Affiliations

¹ Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, P. R. China.
² International Center of Future Science, Jilin University, Changchun 130012, P. R. China.
³ Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130025, P. R. China.

Abstract

Effects of deformation texture and grain size on mechanical properties and corrosion behavior of the Mg-3Al-1Zn (AZ31) alloys were systematically investigated. The results revealed that the ultimate tensile strength (UTS) and fracture elongation (FE) significantly increased from 232 to 273 MPa and 12.5 to 26.4%, respectively. According to the immersion and electrochemical measurements, the results indicated that the corrosion resistance of the alloy was improved obviously. Via electron backscattered diffraction (EBSD), corrosion morphology showed that the propagation of local pitting corrosion was suppressed, which is ascribed to grain refinement, higher texture intensity, and lower dislocation density after rolling and subsequent annealing.