Effect of cyclic crack opening displacement rate on corrosion fatigue crack velocity and fracture mode transitions for Al–Zn–Mg–Cu alloys
Source abstract
Abstract
Abstract A time-domain analysis of corrosion fatigue data obtained by Holroyd and Hardie (1983) on Al–Zn–Mg–Cu alloy 7017-T651 shows that there is a correlation between Stage II crack velocity and cyclic crack opening displacement (COD)-rate. This correlation holds for all cyclic frequency-ΔK data combinations and fracture modes, suggesting that cyclic COD-rate, which is a function of both frequency and ΔK, is a more fundamental crack driving force variable. A diffusion-limited “critical hydrogen” embrittlement model is developed to rationalize effects of cyclic frequency on corrosion fatigue crack velocity and fracture mode transitions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Fatigue and fracture mechanics · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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