The influence of microstructure on the formation of stress corrosion cracks in 7XXX series aluminium alloys

被引：12

作者：

Deshais, G ^{[1
]}

Newcomb, SB ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 2000年 / 331-3卷

关键词：

Al alloys 7XXX; double cantilever beam; energy dispersive spectrometry; sodium chloride solution; stress corrosion cracking; transmission electron microscopy;

D O I：

10.4028/www.scientific.net/MSF.331-337.1635

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stress corrosion cracks (SCC) formed in a 7010 Al alloy aged to different tempers have been examined using transmission electron microscopy. The data described centres on an investigation of those features of the microstructure of the 7010 that determine how the material degrades during SCC. Comparisons are made between the roles played by intermetallic particles, the microchemistry of the alloy grain boundaries and different ageing treatments and the results are discussed in relation to the way in which these parameters can lead to homogenisation either of the deformation or of the electrochemical potential differences which thereby reduce the susceptibility of the alloy to SCC.

引用

页码：1635 / 1640

页数：6

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