Evaluation of Heat Capacity and Resistance to Cyclic Oxidation of Nickel Superalloys

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Paper presents the results of evaluation of heat resistance and specific heat capacity of MAR-M-200, MAR-M-247 and Rene 80 nickel superalloys. Heat resistance was evaluated using cyclic method. Every cycle included heating in 1100°C for 23 hours and cooling for 1 hour in air. Microstructure of the scale was observed using electron microscope. Specific heat capacity was measured using DSC calorimeter. It was found that under conditions of cyclically changing temperature alloy MAR-M-247 exhibits highest heat resistance. Formed oxide scale is heterophasic mixture of alloying elements, under which an internal oxidation zone was present. MAR-M-200 alloy has higher specific heat capacity compared to MAR-M-247. For tested alloys in the temperature range from 550°C to 800°C precipitation processes (γ′, γ″) are probably occurring, resulting in a sudden increase in the observed heat capacity.

[1] Sims, S.T., Stoloff, N.S, Hagel, W.C. (1987). Superalloys II. New York: Ed. John Wiley & Sons.

[2] Mikułowski, B. (1997). Heat resistant alloys and creep. Superalloys. Kraków: AGH.

[3] Zrnik, J., Strunz, P., Vrchovinsky, V., Muransky, O., Novy, Z. & Widenmann, A. (2004). Degradation of creep properties in a long-term thermally exposed nickel base superalloy. Material Science and Engineering A. 387(38), 728-733.

[4] Lee, S.H., Kim, S.W. & Kang, K.H. (2006). Effect of Heat Treatment on the Specific Heat Capacity of Nickel-Based Alloys. International Journal of Thermophysics. 27(1), 282-292.

[5] Liu, L.R., Jin, T., Zhao, N.R., Zhang, Z.H., Shun, X.F., Guan, H.R. & Hu, Z.Q. (2003). Microstructural evolution of a single crystal nickel-base superalloy during thermal exposure. Material Letters. 57, 4540-4546.

[6] Balikci, E. & Raman, A. (2004). Characteristics of the γ’ precipitates at high temperatures in Ni-base polycrystalline superalloy IN738 LC. Journal of Materials Chemistry and Physics. 84, 284-290.

[7] Suwardiea, J.H., Artiagab, R. & Mierb, J.L. (2002). Thermal characterization of a Ni-based superalloy. Thermochimica Acta. 392–393, 295-298.

[8] D'Souzaa, N., & Dongb, H.B. (2007). Solidification path in third-generation Ni-based superalloys, with an emphasis on last stage solidification. Scripta Materialia. 56, 41-44.

[9] Chapman, L.A. (2004). Application of high temperature DSC technique to nickel based superalloys. Journal of Materials Science. 39, 7229-7236.

[10] Mrowec, S. (1982). Kinetics and oxidation mechanism of metals. Katowice. (in Polish).

[11] Smialek, J.L. (2003). A deterministic interfacial cyclic oxidation spelling model. Acta Materialia. 51, 469-483.

[12] Lee, S.H., Kim S.W. & Kang K.H. (2006). Effect of Heat Treatment on the Specific Heat Capacity of Nickel-Based Alloys. International Journal of Thermophysics. 27(1), 282-292. DOI: 10.1007/s10765-006-0029-2.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316


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