Thermal properties of cast nickel based superalloys

• Autorzy: Zielińska M. , Yavorska M. , Poręba M. , Sieniawski J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Evaluation of specific heat and thermal conductivity of nickel based superalloys. Design/methodology/approach: Investigation of thermal conductivity of commercial nickel based superalloys: In 713LC, In 100 and Udimet 700 was performed. Measurements were carried out from 20°C up to 1250°C using the laser flash method. The thermal conductivity was calculated as a function of density, specific heat and thermal diffusivity. Findings: Thermal conductivity of superalloys depends on the chemical composition of alloy and the temperature. Thermal conductivity increases with the increase of the temperature from 9.8 Wm-1K-1 at 23°C to 29.5 Wm-1K-1 at 1197°C for In 713LC. Research limitations/implications: Results can be used to describe the microstructure changes in the material during heat treatment. Practical implications: Thermal conductivity is an important physical property of material which enable to evaluate the usefulness of metallic material to high temperature structural applications. Originality/value: The paper presents the change in thermal diffusivity, thermal conductivity and specific heat of cast nickel based superalloy as a function of temperature.

Słowa kluczowe

EN

superalloys; specific heat; thermal diffusivity; laser flash

PL

superstopy; ciepło; dyfuzyjność termiczna; flash laser

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2010
• Tom: Vol. 44, nr 1
• Strony: 35--38
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Zielińska M.

autor

Yavorska M.

autor

Poręba M.

autor

Sieniawski J.

• Department of Materials Science, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszów, Poland,

Bibliografia

• [1] J. Sieniawski, Nickel and titanium alloys in aircraft turbine engines, Advances in Manufacturing Science and Technology 27/3 (2003) 23-34.
• [2] J.R. Davis, Heat-Resistant Materials, ASM Speciality Handbook, ASM International, 1999.
• [3] M. Zielińska, J. Sieniawski, M. Poręba, Microstructure and mechanical properties of high temperature creep resisting superalloy René 77 modified CoAl2O4, Archives of Materials Science and Engineering 28/10 (2007) 629-632.
• [4] M. Zielińska, K. Kubiak, J. Sieniawski, Surface modification, microstructure and mechanical properties of investment cast superalloy, Journal of Achievements in Materials and Manufacturing Engineering 35/1 (2009) 55-62.
• [5] P. Bała, New tool materials based on Ni alloys strengthened by intermetallic compounds with a high carbon content, Archives of Materials Science and Engineering 42/1 (2010) 5-12.
• [6] A. Onyszko, K. Kubiak, Method for production of single crystal superalloys turbine blades, Archives of Metallurgy and Materials 54/3 (2009) 765-771.
• [7] R.C. Read, The Superalloys Fundamentals and Application, Cambridge University Press, Cambridge, 2006.
• [8] H. Hetmańczyk, L. Swadźba, B. Mendala, Advances materials and protective coatings in aero-engines application, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 372-381.
• [9] J.H. Suwaride, R. Artiaga, J.L. Mier, Thermal characterization of a Ni-based superalloy, Thermochimica Acta 392-393 (2002) 295-298.
• [10] Y. Terada, K. Ohkubo, S. Miura, J.M. Sanchez, T. Mohri, Thermal conductivity and thermal expansion of Ir3X (X=Ti, Zr, Hf, V, Nb, Ta) compounds for high temperature applications, Materials Chemistry and Physics 80 (2003) 385-390.
• [11] S. Min, J. Blumm, A. Lindemann, A new laser flash system for measurement of the thermophysical properties, Thermochimica Acta 455 (2007) 46-49.
• [12] O. Altun, Y. Erhan Boke, A. Kalemtas, Problems for determining the thermal conductivity of TBCs by laser flash method, Journal of Achievements in Materials and Manufacturing Engineering 30/2 (2008) 115-120.
• [13] Y. Terada, K. Ohkubo, T. Mohri, T. Suzuki, Effects of ternary additions on thermal conductivity of NiAl, Intermetallics 7 (1999) 717-723.
• [14] R. Przeliorz, L. Swadźba, M. Góral, Heat capacity versus heat resistance of the casting nickel superalloys intended for turbine blades, Corrosion Protection 51/4-5 (2008) 171-173 (in Polish).
• [15] S.H. Lee, S.W. Kim, K.H. Kang, Effect of heat treatment on the specific heat capacity of nickel based-alloys, International Journal of Thermophysics 27/1 (2006) 282-293.