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Research & Development Results

Publication detail

Original Title: Biaxial Fatigue Fractures of Case-Hardened and High-Temperature-Coatings-Protected Specimens
English Title: Biaxial Fatigue Fractures of Case-Hardened and High-Temperature-Coatings-Protected Specimens
Author(s): SLÁMEČKA, K.; ŠESTÁK, P.; VOJTEK, T.; KIANICOVÁ, M.; HORNÍKOVÁ, J.; ŠANDERA, P.; POKLUDA, J.
Type: journal article
Language: en
Original Abstract: In the contribution, the effect of various surface treatments on appearance of fracture surfaces and micromechanisms involved in the fracture process under bending, torsion and combined bending-torsion fatigue loading is discussed based on microscopical and 3D topographical observations and measurements. The studied materials include nitrided steel specimens featuring an inner fish-eye type of fracture and nickel-base superalloy specimens with protective diffusion and thermal barrier high-temperature coatings, for which the room-temperature failures approximate those following the shutdown of the engine.
English abstract: In the contribution, the effect of various surface treatments on appearance of fracture surfaces and micromechanisms involved in the fracture process under bending, torsion and combined bending-torsion fatigue loading is discussed based on microscopical and 3D topographical observations and measurements. The studied materials include nitrided steel specimens featuring an inner fish-eye type of fracture and nickel-base superalloy specimens with protective diffusion and thermal barrier high-temperature coatings, for which the room-temperature failures approximate those following the shutdown of the engine.
Keywords: Biaxial fatigue; bending; torsion; case-hardening; nitriding; high-temperature coatings; diffusion coatings; thermal barrier coatings; fractography
Released: 01.10.2015
Pages from: 145
Pages to: 149
Pages count: 5
URL: http://www.imr.saske.sk/pmp/issue/ss_2015/PMP_Vol15_ss_p_145-149.pdf