Influence of Zn Content on the Microstructure and Properties of As-annealed Al-Mn-Si Alloys

被引：0
|
作者：
Kang, Shaohai [1 ]
Ding, Dongyan [1 ]
Gao, Yongjin
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
来源：
MATERIAL SCIENCES AND TECHNOLOGY, PTS 1 & 2 | 2012年 / 560-561卷
关键词：
Alloy; Corrosion; Microstructure; Tensile Properties; PITTING CORROSION;
D O I：
10.4028/www.scientific.net/AMR.560-561.937
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The effect of Zn addition on the microstructure, tensile properties and electrochemical properties of as-annealed Al-Mn-Si alloy was investigated through TEM observations, anodization metallography, tensile tests and Tafel polarization analysis. High density precipitates were found in the Zn-containing alloys and the alloy with 1.5 % Zn had the most uniform precipitation. The Zn element could restrain recrystallization of the alloy. Tensile test results indicated that Zn has a great effect on tensile strength of Al-Mn-Si alloy. The alloy with 1.8 % Zn addition had the highest ultimate tensile strength. The electrochemical testing results indicated that Zn element had great impact on the corrosion potential of the as-annealed alloys tested in 0.5% NaCl solutions. Alloying with Zn element could make the corrosion potential shift to negative direction but increase the resistance to pitting corrosion.
引用
收藏
页码：937 / 942
页数：6
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