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ELEVATED TEMPERATURE FATIGUE CRACK PROPAGATION IN HOT WORK TOOL STEEL
Author(s) -
Tang N.Y.,
Plumtree A.
Publication year - 1991
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1991.tb00726.x
Subject(s) - waveform , materials science , fracture mechanics , work (physics) , hot work , atmospheric temperature range , wave propagation , structural engineering , crack closure , composite material , tool steel , engineering , mechanical engineering , physics , electrical engineering , thermodynamics , optics , voltage
Cyclic tests have been carried out on a hot work tool steel (H13) over a range of temperatures using different waveforms. At a temperature of 125°C, a slow‐fast wave resulted in lower crack propagation rates than those with a balanced (or symmetrical) waveform. However, at 500°C normal fatigue crack propagation behaviour was observed in which the slow‐fast wave was more damaging than a balanced waveform at the same frequency. Dynamic strain aging is attributed to the reversed crack propagation effect at 125°C.