Microstructure, mechanical properties and corrosion behavior of quasicrystal-reinforced Mg-Zn-Y alloy subjected to dual-frequency ultrasonic field

被引：49
|
作者：
Chen, Xingrui [1 ,2 ]
Ning, Shaochen [1 ]
Wang, An [1 ]
Le, Qichi [1 ]
Liao, Qiyu [1 ]
Jia, Yonghui [1 ]
Cheng, Chunlong [1 ]
Li, Xiaoqaing [1 ]
Atrens, Andrej [2 ]
Yu, Fuxiao [1 ]
机构：
[1] Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, 314 Mailbox, Shenyang 110819, Peoples R China
[2] Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia
来源：
CORROSION SCIENCE | 2020年 / 163卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Grain refinement; Corrosion; Quasicrystal I-phase; Mechanical properties; Ultrasonic treatment; AC-IMPEDANCE SPECTROSCOPY; MAGNESIUM ALLOY; DEFORMATION-BEHAVIOR; HYDROGEN REMOVAL; GRAIN-REFINEMENT; POWER ULTRASOUND; AZ91; SOLIDIFICATION; TEMPERATURE; STRENGTH;
D O I：
10.1016/j.corsci.2019.108289
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dual-frequency ultrasonic field (DUF) was employed to refine the quasicrystal-reinforced Mg-Zn-Y alloy. Microstructural evolution, corrosion behavior and mechanical properties of as-cast Mg-Zn-Y alloys with and without DUF treatment were investigated. Results reveal that the DUF treatment can refine the alpha-Mg grain and the I-phase dramatically. Consequently, the corrosion resistance and the mechanical properties were improved. The increase of segregation of solute Zn element at grain boundaries and the morphology change of I-phase should respond for the promoting of corrosion resistance. The improvement of tensile strength can be ascribed to the tremendous grain refinement and strengthening effect of tiny I-phase quasicrystals.
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页数：13
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