Institute of Physics of Materials AS CR, v. v. i. > Projects > Protective diffusion coatings on cast nickel-based superalloys for high temperature application

Protective diffusion coatings on cast nickel-based superalloys for high temperature application

Investigatordoc. RNDr. Karel Obrtlík, CSc.
Number of ProjectP107/11/2065
AgencyGrantová agentura České republiky
Duration2010-12-31 - 2013-12-30

Anotace
The proposed project is directed to manufacture the composite, made up of a protective diffusion layer on the surface of cast nickel base superalloy Inconel 713LC, for high temperature application in an oxidizing and corrosive atmosphere under the operation of cyclic straining. The main goal is to find out an optimum technology of protective layer deposition base on the surface saturation with Al, and with Al in combination with Si and with Cr. The thermal regime of deposition and substrate surface treatment will be specified. The project solution will bring new complex data on the effect of deposition parameters on chemical, phase, structural, and mechanical properties of the protective layers. The structure and phase evolution of the layers exposed to high temperature will be analyzed. The influence of the layers on the fatigue life of the superalloy will be obtained both in continuous cycling and in cycling with dwells at high temperature in air. Mechanisms leading to the composite degradation under the cyclic straining and under the high temperature exposition will be identified.

2014

Obrtlík K., Hutařová S., Čelko L., Juliš M., Podrábský T., Šulák I.: Effect of thermal barrier coating on low cycle fatigue behavior of cast Inconel 713LC at 900 °C. Adv. Mater. Res. 891-892 (2014) 848-853

Šmíd M., Obrtlík K.: Surface relief evolution in IN792-5A nickel base superalloy under high temperature fatigue straining with hold times. Key Eng. Mater. 592-593 (2014) 429-432


2013

Polák J., Obrtlík K., Petrenec M., Man J., Kruml T.: Mechanisms of high temperature damage in elastoplastic cyclic loading of nickel superalloys and TiAl intermetallics. Procedia Eng. 55 (2013) 114-122


2012

Obrtlík K., Pospíšilová S., Juliš M., Podrábský T., Polák J.: Fatigue behavior of coated and uncoated cast Inconel 713LC at 800 °C. Int. J. Fatigue 41 (2012) 101-106


2011

Pospíšilová S., Obrtlík K., Juliš M., Podrábský T.: Initiation and growth of fatigue cracks in Inconel 713LC with Al coating at 800 C. Chem. Listy 105 (2011) s840-s841

Juliš M., Kusmič D., Pospíšilová S., Průša S., Obrtlík K., Dluhoš J., Podrábský T.: Study of surface relief evolution in cyclically strained superalloy IN738LC using advanced experimental techniques. Chem. Listy 105 (2011) 814-815

Obrtlík K., Pospíšilová S., Juliš M., Podrábský T., Polák J.: Effect of Al and Al-Si diffusion coating on the low cycle fatigue behavior of Inconel 713LC. Procedia Eng. 10 (2011) 1360-1365