0386249 - ÚFM 2013 RIV GB eng J - Journal Article
Obrtlík, Karel - Pospíšilová, S. - Juliš, M. - Podrábský, T. - Polák, Jaroslav
Fatigue behavior of coated and uncoated cast Inconel 713LC at 800 °C.
International Journal of Fatigue. Roč. 41, č. 1 (2012), s. 101-106. ISSN 0142-1123. E-ISSN 1879-3452
R&D Projects: GA ČR(CZ) GAP107/11/2065
Grant - others:FSI VUT v Brně(CZ) 2E13800119
Institutional research plan: CEZ:AV0Z20410507
Institutional support: RVO:68081723
Keywords : High temperature fatigue * Diffusion coating * superalloy
Subject RIV: JL - Materials Fatigue, Friction Mechanics
Impact factor: 1.976, year: 2012 ; AIS: 0.669, rok: 2012
DOI: https://doi.org/10.1016/j.ijfatigue.2011.12.010

Cylindrical specimens of Inconel 713LC in as-received condition and with surface treatment by Al diffusion coating were cyclically strained under strain control at 800 °C in air. Surface treated layer was characterized and the hardness depth profile was measured. Cyclic stress-strain response and fatigue life of both materials were assessed. The stress response of the coated superalloy specimens is lower in comparison with the untreated specimens. Beneficial effect of surface treatment on the Manson-Coffin curve is documented. Specimen sectioning and fracture surface studies revealed fatigue damage mechanisms both in coated and uncoated specimens. Propagation path of the principal crack is predominantly interdendritic.
Permanent Link: http://hdl.handle.net/11104/0215621