Corrosion behaviour of magnesium AZ31 sheet produced by twin roll casting

被引：13
|
作者：
Oktay, G. [1 ]
Urgen, M. [2 ]
机构：
[1] TUBITAK MRC, Mat Inst, TR-41470 Gebze, Kocaeli, Turkey
[2] Istanbul Tech Univ, Dept Met & Mat Engn, TR-34469 Ayazaga, Istanbul, Turkey
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 05期
关键词：
Pitting and filiform corrosion; Twin roll and direct chill castings; AZ31 magnesium alloy; Al-Mn intermetallic; FILIFORM CORROSION; PURE MAGNESIUM; ALLOY AZ31; SULFATE; AZ91; SURFACE; MG; MICROSTRUCTURE; CHLORIDE; FILMS;
D O I：
10.1179/1743278214Y.0000000234
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, corrosion behaviour of magnesium AZ31 alloy sheets produced by different casting methods was investigated. Magnesium AZ31 sheets of 2 mm in thickness produced by conventional direct chill casting + rolling and AZ31 sheets of 2 mm in thickness and 1500 mm in width produced by twin roll strip casting + rolling were used as samples. For the determination of processing method dependent corrosion behaviour, potentiodynamic electrochemical corrosion and also immersion tests were performed in 0.5M Na2SO4 and 0.01M NaCl solutions. Corrosion damage occurred during the tests was extensively investigated by scanning electron microscopy. Results of the work revealed the clear role of processing method dependent size and distribution of intermetallics on the corrosion behaviour of AZ31 sheets.
引用
收藏
页码：380 / 389
页数：10
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