Stress corrosion cracking of cast 7XXX aluminium fibre reinforced composites

Using continuous immersion techniques, the stress corrosion cracking (SCC) behaviour of cast and heat-treated Al–6%Zn–1%Mg (Al-6-1) and Al–6%Zn–1%Mg–1%Ag (Al-6-1-1) metal matrix composites were evaluated. It was found that the Al-6-1-1 composites exhibit longer lifetimes compared to the Al-6-1 when...

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Published inCorrosion science Vol. 46; no. 4; pp. 903 - 915
Main Authors Winkler, S.L, Flower, H.M
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.04.2004
Elsevier Science
Subjects
Aluminium
Applied sciences
Composites
Corrosion
Corrosion environments
Corrosion mechanisms
Exact sciences and technology
Fibre reinforced metals
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
Stress corrosion cracking (SCC)
Composites
Aluminium
Stress corrosion cracking (SCC)
Stress corrosion cracking
Corrosion
Fibre reinforced metal
Composite material
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Summary:Using continuous immersion techniques, the stress corrosion cracking (SCC) behaviour of cast and heat-treated Al–6%Zn–1%Mg (Al-6-1) and Al–6%Zn–1%Mg–1%Ag (Al-6-1-1) metal matrix composites were evaluated. It was found that the Al-6-1-1 composites exhibit longer lifetimes compared to the Al-6-1 when tested under various SCC conditions. Fractography and scanning electron microscopy studies performed on stress-corroded specimens found evidence of the respective roles played by the dissolution and hydrogen embrittling mechanisms in the initiation and propagation of stress corrosion cracks within these materials.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2003.09.029