Effect of aging time at low aging temperatures on the corrosion of aluminum alloy 6061

被引：90
作者：
El-Menshawy, Kamal [1 ]
El-Sayed, Abdel-Wahab A. [1 ]
El-Bedawy, Mohammed E. [1 ]
Ahmed, Hafez A. [2 ]
El-Raghy, Saed M. [2 ]
机构：
[1] Atom Energy Author, Dept Met, Cairo, Egypt
[2] Cairo Univ, Fac Engn, Cairo, Egypt
来源：
CORROSION SCIENCE | 2012年 / 54卷
关键词：
Aluminium; Polarization; Pitting corrosion; Passivity; ALMGSI(CU) MODEL ALLOY; LOW COPPER CONTENT; INTERGRANULAR CORROSION; HEAT-TREATMENT; PRECIPITATION;
D O I：
10.1016/j.corsci.2011.09.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of heat treatment in the underaged, peak aged and overaged conditions in the temperature range 140-225 degrees C on the corrosion characteristics of Al-Mg-Si-Cu alloy (AA6061) was investigated. Potentiodynamic polarization testing in neutral NaCl solution and immersion testing in acidified NaCl solution were applied to investigate the corrosion behavior of the alloy. The results showed significant dependence of the dominant corrosion form and the electrochemical corrosion parameters on the aging conditions. Maximum changes were noted for the peak aged condition. The results were discussed in terms of changes in precipitate type, size, volume fraction and distribution. (C) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：167 / 173
页数：7
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