Effect of Al-Si diffusion coating on the fatigue behavior of cast Inconel 713LC at 800°C

0355180 - ÚFM 2011 RIV NL eng J - Článek v odborném periodiku
Juliš, M. - Obrtlík, Karel - Pospíšilová, S. - Podrábský, T. - Polák, Jaroslav
Effect of Al-Si diffusion coating on the fatigue behavior of cast Inconel 713LC at 800°C.
Procedia Engineering. Roč. 2, č. 1 (2010), s. 1983-1989. E-ISSN 1877-7058.
[Fatigue 2010. Praha, 06.06.2010-11.06.2010]
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: Low cycle fatigue * Diffusion coating * Inconel 713LC * High temperature * Damage mechanisms
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

Cylindrical specimens of Inconel 713LC in as-received condition and with surface treatment by Al-Si diffusion coating were cyclically strained under strain control at 800 °C in air. Changes in the shape and size of the superalloy precipitates during the surface treatment are documented. The structural and hardness characteristics of the hardened surface layer are presented. Hardening/softening curves, cyclic stress-strain curves, and fatigue life curves are obtained. The sections parallel to the specimen axis and fracture surfaces have been examined to study fatigue damage mechanisms. The coating results in fatigue life improvement while the stress response of the treated material is lower in comparison with the untreated one.
Trvalý link: http://hdl.handle.net/11104/0194010