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LCF behavior and coupled damage mechanism of a Nickel-Based single crystal superalloy in hot corrosion environment
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DOI：10.1016/j.ijfatigue.2026.109897.png)
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Abstract
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• Uncoated DD5 alloy shows a peak low-cycle fatigue life at 850 ℃. • Salt-coated specimens present a monotonically decreased fatigue life as temperature rises, due to hot corrosion damage. • Hot corrosion degrades fatigue via surface layer damage, sulfide embrittlement, and Al/Cr depletion. • Damage mechanism shifts from mechanical fatigue to hot corrosion with temperature.
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