Effect of minor Nd substitution for Y on microstructure and corrosion resistance of extruded Mg-Zn-Y alloy

被引：1
|
作者：
Zhang, Yuezhong [1 ,2 ]
Wang, Xiaoyu [3 ]
Liu, Baosheng [2 ,3 ]
Zhang, Kewei [3 ]
Zhao, Xudong [1 ]
Fang, Daqing [2 ,3 ]
机构：
[1] Taiyuan Univ Sci & Technol, Coll Chem & Biol Engn, Taiyuan, Shanxi, Peoples R China
[2] Taiyuan Univ Sci & Technol, Engn Res Ctr Magnesium Alloys Shanxi Prov, Taiyuan, Shanxi, Peoples R China
[3] Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2018年 / 109卷 / 10期
关键词：
Magnesium alloy; Extrusion; Corrosion; Rare earth elements; MECHANICAL-PROPERTIES; AZ91;
D O I：
10.3139/146.111683
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influence of minor Nd substitution on the microstructure and corrosion resistance of Mg-Zn-Y alloy were investigated. Results indicate that the partial substitution of Nd for Y can effectively refine grains but deteriorate the corrosion resistance of extruded Mg-Zn-Y alloy. The corrosion rates, measured by immersion tests in 3.5 % NaCl solution at 25 degrees C, arc 12 and 19 mm . y(-1) for the Mg-5.6Zn-1.4Y and Mg-5.6Zn-1.0Y-0.4Nd alloys, respectively. The negative effect of Nd is associated with enhanced microgalvanic corrosion resulting from grain refinement and higher area of second phase, as well as to a degraded protectiveness of the corrosion product layer.
引用
收藏
页码：968 / 973
页数：6
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