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Effect of Ti and Zr elements with equal mass ratio on microstructure and corrosion resistance of Zn‐11Al‐3Mg alloy
Author(s) -
Zhang Mingming,
Zhou Guorong,
Sun Huijie,
Teng Xinying,
Zhao Zhenlu
Publication year - 2021
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.202011723
Subject(s) - microstructure , alloy , corrosion , materials science , metallurgy , phase (matter) , nucleation , 6111 aluminium alloy , chemistry , organic chemistry
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 Al 3 (Ti x Zr 1 − 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 Zn 5 (OH) 8 Cl 2 ·H 2 O and Zn 6 Al 2 (OH) 16 CO 3 ·4H 2 O.