Effect of Ti and Zr elements with equal mass ratio on microstructure and corrosion resistance of Zn‐11Al‐3Mg alloy. Issue 3 (4th September 2020)

• Record Type: Journal Article
• Authors: Zhang, Mingming; Zhou, Guorong; Sun, Huijie; Teng, Xinying; Zhao, Zhenlu
• Is Part Of: Materials and corrosion. Volume 72:Issue 3(2021)
• Page Start: 585
• Page End: 595
• Publication Date: 2020-09-04
• Subjects: corrosion resistance -- electrochemical properties -- grain refinement -- Zn‐Al‐Mg alloy; Materials -- Periodicals; Metals -- Periodicals; Corrosion and anti-corrosives -- Periodicals; 620.1122305
• DOI: 10.1002/maco.202011723
• Languages: English
• ISSNs: 0947-5117

Abstract

Abstract: In this study, the effect of Ti and Zr elements with equal mass ratio on microstructure and corrosion resistance of Zn‐11Al‐3Mg alloy was investigated. The microstructure was significantly refined and Al‐rich phase transformed from dendrite to petal‐like with the addition of Zr and Ti elements, due to the Al3 (Ti x Zr1 − x ) phase as the nucleation substrate. The corrosion resistance of Zn‐11Al‐3Mg‐ x (Ti, Zr) alloy was effectively improved. Moreover, the corrosion products of Zn‐Al‐Mg alloy were not changed by the addition of Ti and Zr, which are mainly composed of Zn5 (OH)8 Cl2 ·H2 O and Zn6 Al2 (OH)16 CO3 ·4H2 O. Abstract : Corrosion has been limiting the development of materials, especially metal materials. A hot‐dip alloy is widely studied as a common corrosion‐resistant material. The effects of Ti and Zr on the microstructure and corrosion resistance of Zn‐Al‐Mg alloy were studied in this paper. It lays a foundation for the research and development of a high corrosion‐resistant Zn‐Al‐Mg hot‐dip alloy.