Abstract
Crack propagation experiments were performed as a function of temperature on the single crystalline superalloy RENÉ N4. Crack growth rates at 21 °C, 704 °C, 927 °C, 1038 °C, and 1093 °C were measured on specimens with [001] and [110] directions parallel to the load axis and the machined notch, respectively. Fracture surfaces at each temperature were examined and discussed in terms of the crack tip stress field and the crystallographic orientation of the specimens.
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Lerch, B.A., Antolovich, S.D. Fatigue crack propagation behavior of a single crystalline superalloy. Metall Trans A 21, 2169–2177 (1990). https://doi.org/10.1007/BF02647878
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DOI: https://doi.org/10.1007/BF02647878