Effect of 0.45 wt.% Nd Addition on the Corrosion Resistance of Extruded Mg-6Al-3Sn-2Zn Alloy

被引：1
作者：
Lv, Bin-Jiang [1 ]
Gao, Fu-Hao [1 ]
Lv, Jun-Jiang [2 ]
Peng, Jian [3 ]
机构：
[1] Qingdao Univ Technol, Sch Mech & Automot Engn, Qingdao 266520, Peoples R China
[2] Chongqing Med & Pharmaceut Coll, Chongqing 401331, Peoples R China
[3] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2024年 / 33卷 / 16期
基金：
中国国家自然科学基金;
关键词：
corrosion; Mg alloy; microalloying; Nd; ZN-ZR ALLOYS; MECHANICAL-PROPERTIES; CRYSTALLOGRAPHIC ORIENTATION; BEHAVIOR; MICROSTRUCTURE; MAGNESIUM; IMPROVEMENT; EVOLUTION; NEODYMIUM;
D O I：
10.1007/s11665-023-08526-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Nd microalloying on the microstructure and corrosion behavior of extruded Mg-6Al-3Sn-2Zn (ATZ632) alloys was investigated. The addition of Nd (0.45 wt.%) into the ATZ632 alloy resulted in the formation of a NdZn1.66Al2.34 phase with a relatively low Volta potential of 68 similar to 78 mV. The polarization resistance of this alloy was calculated to be 564.33 ohm cm(2), which is approximately 7.7 times slower than that of the ATZ632 alloy. The main factors for improving the corrosion resistance of the extruded ATZ632 alloy with 0.45 wt.% Nd addition are: (1) the Nd2O3 prevention of Cl- from passing through the corrosion film; (2) the formation of denser and more uniform corrosion films; and (3) the grain refinement and wakening of the (0001) base-plane texture.
引用
收藏
页码：8262 / 8273
页数：12
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