Measurement of atmospheric corrosion fatigue crack growth rates on AA7085-T7451

Brandon Free,Gabriella Marino,Eric Schindelholz,Sarah Galyon Dorman,Jenifer S. (Warner) Locke

International Journal of Fatigue（2023）

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摘要

•Salt-printing on sample surfaces provides a unique way to quantify atmospheric da/dN.•Atmospheric da/dN for deliquesced surface salt is ≈5 × faster at 80 % RH than 40 % RH.•Depending on frequency and salinity, atmospheric da/dN can exceed full immersion.•da/dN for AA7085 in chloride containing atmospheric environments is established.

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关键词

Aluminium alloys,Corrosion fatigue,Crack growth rate,Environmental assisted fatigue

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