Abstract
The structure and properties of high-alloy refractory nickel alloy ÉP741NP after quenching and aging in a standard mode with additional heating to 650°C (τ = 4 h), 870°C (τ = 10 h), and 1000–1050°C (τ = 2.5 h) that corresponds to operating conditions and production processes of specific parts are studied. The rate of growth of fatigue cracks is determined as a function of the amplitude of the stress intensity factor at 20 and 650°C. Data on the types of fracture surface textures for fatigue crack propagation and various values of this factor are obtained.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 43–46, February, 2008.
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Polyanskii, A.M., Polyanskii, V.M. Structure and fracture of granulated alloy ÉP741NP after fatigue tests. Met Sci Heat Treat 50, 83–87 (2008). https://doi.org/10.1007/s11041-008-9017-4
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DOI: https://doi.org/10.1007/s11041-008-9017-4