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Estimation of environment-induced crack growth rate as a function of stress intensity factors generated during slow strain rate testing of aluminum alloys

DOI: 10.1515/corrrev-2019-0031 DOI Help

Authors: N. J. Henry Holroyd (Case Western Reserve University; The University of Manchester) , Timothy L. Burnett (The University of Manchester) , Benjamin C. Palmer (Case Western Reserve University) , John J. Lewandowski (Case Western Reserve University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Corrosion Reviews

State: Published (Approved)
Published: June 2019
Diamond Proposal Number(s): 18165

Abstract: In this contribution, we introduce a simple approach to quickly estimate the environment-induced crack velocity (CV) as a function of the calculated applied stress intensity factor (K) developed during the slow strain rate testing of aluminum alloys exposed to aqueous or humid air-type environments. The CV-K behavior for a commercial aluminum-magnesium alloy, AA5083-H131, sensitized and pre-exposed to a 0.6 m NaCl solution has been estimated from slow strain rate test data. The predicted threshold K and crack velocities match recently published data for the same alloy in similarly sensitized conditions where the CV-K data were obtained using state-of-the-art fracture mechanics-based testing.

Journal Keywords: aluminum alloys; corrosion; fracture; stress corrosion cracking

Subject Areas: Materials, Engineering


Instruments: I13-2-Diamond Manchester Imaging