DeterminationoffatiguecrackgrowthratecharacteristicsinvacuumofNi-basedalloyEP741NP
D.V. NemtsevTeam of the Strength Department, A. Lyulka Experimental Design Bureau. Dipl. Engineer-Physicist-Technologist (MATI, 1998). Cand. of Physico-Mathematical Sciences (MATI, 2006)E.Y. MarchukovTeam of the Strength Department, A. Lyulka Experimental Design Bureau. Dipl. Engineer-Physicist-Technologist (MATI, 1998). Cand. of Physico-Mathematical Sciences (MATI, 2006)М. А. АртамоновA. Lyulka Experimental Design Bureau -Branch of PJSC «UEC-Ufa Engine Industrial Association», Russia
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The article presents the results of testing special cylindrical specimens with an embedded defect to obtain characteristics of fatigue crack growth rate in vacuum. Fractographic studies of the specimens were conducted to determine the size of fatigue striations. The crack propagation fronts at different stages of growth were reconstructed, and finite element analysis was per-formed to determine the stress intensity factors. Based on the obtained data, kinetic diagrams of fatigue crack growth were constructed
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