Kinetic study of the annealing reactions in Cu-Ni-Fe alloys


  • Eduardo Donoso Universidad de Chile, Facultad de Ciencias Físicas y Matemáticas, Departamento de Ciencia de los Materiales



Cu-Ni-Fe alloys, Calorimetry, Hardening, Kinetic


The thermal aging of a Cu-45Ni-4Fe, Cu-34Ni-11Fe and Cu-33Ni-22Fe alloys tempered from 1173 K have been studied from Differential Scanning Calorimetry (DSC) and microhardness measurements. The analysis of DSC curves, from room temperature to 950 K, shows the presence of one exothermic reaction associated to the formation of FeNi3 phase nucleating from a modulate structure, and one endothermic peak attributed to dissolution of this phase. Kinetic parameters were obtained using the usual Avrami-Erofeev equation, modified Kissinger method and integrated kinetic functions. Microhardness measurements confirmed the formation and dissolution of the FeNi3 phase.


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Brown, A.M., Ashby, M.F. (1980). Correlation for diffusion constants. Acta Metall. 28 (8), 1085–1101.

Donoso, E., Diánez, M.J., Sayagués, M.J., Criado, J.M., Varschavsky, A., Díaz, G. (2007). Non isothermal calorimetric study of the precipitation processes in a Cu-10% Ni-3% Al. Rev. Metal. 43 (2), 117–124.

Donoso, E. (2010). Influence of cobalt and chromium additions on the precipitation processes in a Cu-4Ti alloys. Rev. Metal. 46 (6), 542–547.

Donoso, E., Espinoza, R., Diánez, M.J., Criado, J.M. (2012a). Microcalorimetric study of the annealing hardening mechanism of a Cu-2.8Ni-1.4Si (at.%) alloy. Mater. Sci. Eng. A 556, 612–616.

Donoso, E., Diánez, M.J., Criado, J.M. (2012b). Non-isothermal microcalorimetric evaluations in quenched and cold-rolled Cu-9Ni-5.5Sn alloys. Rev. Metal. 48 (1), 67–75.

Li, H.X., Hao, X.J., Zhao, G., Hao, S.M. (2001). Characteristics of the continuous coarsening decomposed Cu-Ni-Fe alloy. J. Mater. Sci. 36 (3), 779–784.

López Hirata, V.M., Hirano, K.I. (1996). A study of spinodal decomposition in Ni-30 at.% Cu and Cu-46 at.% Ni-4 at.% Fe alloys using electrical resistivity measurements. J. Mater. Sci. 31 (7), 1703–1706.

López, F.A., Sierra, M.J., Rodríguez, O., Millán, R., Alguacil, F.J. (2014). Non-isothermal kinetics of the thermal desorption of mercury from a contaminated soil. Rev. Metal. 50 (1), e001.

Mittemeijer, E.J., Cheng, L., Van der Shaaf, P.J., Brakmany, C.M., Korevaar, B.M. (1988). Analysis of nonisothermal transformation kinetics; tempering of iron-carbon and iron- nitrogen martensites. Metall. Trans. A 19 (4), 925–932.

Nakanishi, K., Suzuki, H. (1974). Analysis of the grain size dependence of the yield stress in copper-aluminum and copper-nickel alloys. T. Jpn. I. Met. (JIM) 15 (6), 435–440.

Ozawa, T. (1976). A modified method for kinetic analysis of thermoanalytical data. J. Thermal Anal. 9 (3), 369–373.

Pearson, W.B. (1958). A Handbook of Lattice Spacings and Structures of Metals and Alloys, Pergamon Press, pp. 571–574.

Pérez-Maqueda, L.A., Criado, J.M., Málek, J. (2003). Combined kinetic analysis for crystallization kinetics of noncrystalline solids. J. Non-Cryst. Solids 320 (1–3), 84–91.

Reghavan, V. (2004). Cu-Fe-Ni (Copper-Iron-Nickel). J. Phase Eq. Diff. 25 (6), 547–549.

Sánchez-Jiménez, P.E., Criado, J.M., Pérez-Maqueda, L.A. (2008). Kissinger kinetic analysis of data obtained under different heating schedules. J. Thermal Anal. Cal. 94 (2), 427–432.

Servant, C., Guymont, M., Lyon, O. (2001). A new phase in the ternary system Cu-Fe-Ni. Scripta Mater. 45 (1), 103–108.

Shevakin, J.F., Tsypin, M.J. (1997). The curves of plastic flow and deformation strengthening of some solid solution on the basis of copper. Adv. Perfomance Mater. 4 (2), 233–237.

Varschavsky, A., Donoso, E. (1991). Short-range ordering by excess and thermal vacancies during linear heating experiments in α-Cu-Al alloys. Mater. Sci. Eng. A 145 (1), 95–107.

Varschavsky, A., Donoso, E. (2002). Energetic and kinetic evaluations conducted in a quasi-binary Cu-1 at.% Co2Si alloy through DSC. J. Termal Anal. Cal. 68 (1), 231–241.

Varschavsky, A., Donoso, E. (2003). Energetic and kinetic evaluations in a quasi-binary Cu-1 at.% Co2Si. Mater. Lett. 57 (7), 1266–1271.



How to Cite

Donoso, E. (2014). Kinetic study of the annealing reactions in Cu-Ni-Fe alloys. Revista De Metalurgia, 50(3), e020.