The mechanism of stress corrosion cracking of Cu-base alloys

The mechanism of stress corrosion cracking of Cu-base alloys

SCC of α-copper alloy solid solutions in neutral Mattson's solution is controlled by the rate of de-alloying at the crack tips. Only Mn and Zn alloying additions result in high rates of SCC because they can support large anodic current densities (> 0.1 Acm−1) at the crack tips, at the cracki...

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Veröffentlicht in:Corrosion science 1990, Vol.30 (2-3), p.267-291
Hauptverfasser: Pryor, M.J., Lin, L.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
copper alloys
Corrosion
Corrosion mechanisms
crack propagation
cracks
Cross-disciplinary physics: materials science
rheology
dislocations
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Specific materials
stress
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Zusammenfassung:SCC of α-copper alloy solid solutions in neutral Mattson's solution is controlled by the rate of de-alloying at the crack tips. Only Mn and Zn alloying additions result in high rates of SCC because they can support large anodic current densities (> 0.1 Acm−1) at the crack tips, at the cracking potential. Solute is believed to be transported to the tips by pipe diffusion in the cores of dislocations generated at the crack tips. Certain ternary alloy additions having high total misfit parameters significantly reduce the rates of SCC.
ISSN:0010-938X
1879-0496
DOI:10.1016/0010-938X(90)90079-K