Hostname: page-component-669899f699-7xsfk Total loading time: 0 Render date: 2025-04-27T10:56:14.276Z Has data issue: false hasContentIssue false
  • English
  • Français

Rapid solidification behavior of Cu–Co–Fe alloy

Published online by Cambridge University Press:  19 April 2013

Lei Zhao  and
Jiu Zhou Zhao
Lei Zhao*
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People’s Republic of China
Jiu Zhou Zhao*
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: jzzhao@imr.ac.cn
Get access

Abstract

The ternary Cu–Co–Fe alloy was rapidly solidified by using the high pressure gas atomization technique. Powders with a well-dispersed microstructure resulting from the liquid–liquid phase transformation were obtained. A model describing the microstructure evolution in an atomized drop during the liquid–liquid phase transformation was developed. The kinetic details of the liquid–liquid phase transformation were discussed. The numerical results show a favorable agreement with the experimental ones. They demonstrate that under the rapid cooling conditions of gas atomization, the spatial phase separation due to the Marangoni migration of the minority phase droplets is very weak. Also, the effect of Ostwald coarsening of the minority phase droplets on the microstructure is negligible. For Cu-10 wt% Co-10 wt% Fe alloy, the average radius and number density of the Fe–Co-rich particles depend exponentially on the cooling rate of the melt during the nucleation period of the Fe–Co-rich droplets.

Keywords

rapid solidificationmicrostructuresimulation
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 9 , 14 May 2013 , pp. 1203 - 1210
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

Biselli, C. and Morris, D.G.: Microstructure and strength of Cu-Fe in situ composites after very high drawing strains. Acta Mater. 44, 493–504 (1996).CrossRefGoogle Scholar
Berkowitz, A.E., Mitchell, J.R., Carey, M.J., Young, A.P., Zhang, S., Spada, F.E., Parker, F.T., Hutten, A., and Thomas, G.: Giant magnetoresistance in heterogeneous Cu-Co alloys. Phys. Rev. Lett. 68, 3745–3748 (1992).CrossRefGoogle ScholarPubMed
Munitz, A., Elder-Randall, S.P., and Abbaschian, R.: Supercooling effects in Cu-10 Wt Pct Co alloys solidified at different cooling rates. Metall. Mater. Trans. A 23A, 1817–1827 (1992).CrossRefGoogle Scholar
Nakagawa, Y.: Liquid immiscibility in copper-iron and copper-cobalt systems in the supercooled state. Acta Metall. 6, 704–711 (1958).CrossRefGoogle Scholar
Cao, C.D., Herlach, D.M., Kolbe, M., Görler, G.P., and Wei, B.: Rapid solidification of Cu84Co16 alloy undercooled into the metastable miscibility gap under different conditions. Scr. Mater. 48, 5–9 (2003).CrossRefGoogle Scholar
Guo, J.J., Liu, Y., Jia, J., Su, Y.Q., and Ding, H.S.: Coarsening process of minority phase droplets during rapidly cooling an immiscible alloy through the miscibility gap. Acta. Metall. Sin. 37, 363–368 (2001).Google Scholar
Turchanin, M.A., Dreval, L.A., Abdulov, A.R., and Agraval, P.G.: Mixing enthalpies of liquid alloys and thermodynamic assessment of the Cu-Fe-Co system. Powder Metall. Met. Ceram. 50, 98–116 (2011).CrossRefGoogle Scholar
Kim, D.I. and Abbaschian, R.: The metastable liquid miscibility gap in Cu-Co-Fe alloys. J. Phase Equilib. 21, 25–31 (2000).CrossRefGoogle Scholar
Munitz, A., Bamberger, A.M., Wannaparhun, S., and Abbaschian, R.: Effects of supercooling and cooling rate on the microstructure of Cu-Co-Fe alloys. J. Mater. Sci. 41, 2749–2759 (2006).CrossRefGoogle Scholar
Curiotto, S., Battezzati, L., Johnson, E., Palumbo, M., and Pryds, N.: The liquid metastable miscibility gap in the Cu-Co-Fe system. J. Mater. Sci. 43, 3253–3258 (2008).CrossRefGoogle Scholar
Bamberger, M., Munitz, A., Kaufman, L., and Abbaschian, R.: Evaluation of the stable and metastable Cu-Co-Fe phase diagrams. Calphad 26, 375–384 (2002).CrossRefGoogle Scholar
Wang, C.P., Liu, X.J., Ohnuma, I., Kainuma, R., and Ishida, K.: Phase equilibria in Fe-Cu-X (X: Co, Cr, Si, V) ternary systems. J. Phase. Equilib. 23, 236–245 (2002).CrossRefGoogle Scholar
Palumbo, M., Curiotto, S., and Battezzati, L.: Thermodynamic analysis of the stable and metastable Co-Cu and Co-Cu-Fe phase diagrams. Calphad 30, 171–178 (2006).CrossRefGoogle Scholar
Dai, F.P., Cao, C.D., and Wei, B.B.: Phase separation and rapid solidification of liquid Cu60Fe30Co10 ternary peritectic alloy. Sci. China, Ser. G 50, 509–518 (2007).CrossRefGoogle Scholar
Granasy, L. and Ratke, L.: Homogeneous nucleation within the liquid miscibility gap of Zn-Pb alloys. Scr. Mater. 28, 1329–1334 (1993).CrossRefGoogle Scholar
Zhao, J.Z., Ratke, L., and Feuerbacher, B.: Microstructure evolution of immiscible alloys during cooling through the miscibility gap. Modell. Simul. Mater. Sci. Eng. 6, 123–139 (1998).CrossRefGoogle Scholar
Marqusee, J.A. and Ross, J.: Theory of Ostwald ripening: Competitive growth and its dependence on volume fraction. J. Chem. Phys. 80, 536–543 (1984).CrossRefGoogle Scholar
Zhao, J.Z.: The kinetics of the liquid-liquid decomposition under the rapid solidification conditions of gas atomization. Mater. Sci. Eng., A 454–455, 637–640 (2007).CrossRefGoogle Scholar
Ranz, W.E. and Marshall, W.R.: Evaporation from drops. Chem. Eng. Prog. 48, 141–146 (1952).Google Scholar
Grant, P.S., Cantor, B., and Katgerman, L.: Modelling of droplet dynamic and thermal histories during spray forming I. Individual droplet behavior. Acta Metall. Mater. 41, 3097–3108 (1993).CrossRefGoogle Scholar
Patankar, S.V.: Numerical Heat Transfer and Fluid Flow (McGraw-Hill, New York, 1980).Google Scholar
Dinsdale, A.T.: SGTE data for pure elements. Calphad 15, 317–425 (1991).CrossRefGoogle Scholar
Turchanin, M.A. and Agraval, P.G.: Phase equilibria and thermodynamics of binary copper systems with 3d-metals. V. Copper–cobalt system. Powder Metall. Met. Ceram. 46, 77–89 (2007).CrossRefGoogle Scholar
Turchanin, M.A., Agraval, P.G., and Nikolaenko, I.V.: Thermodynamics of alloys and phase equilibria in the copper–iron system. J. Phase Equilib. 24, 307–319 (2003).CrossRefGoogle Scholar
Ohnuma, I., Enoki, H., Ikeda, O., Kainuma, R., Ohtani, H., Sundman, B., and Ishida, K.: Phase equilibria in the Fe–Co binary system. Acta Mater. 50, 379–393 (2002).CrossRefGoogle Scholar
Kaptay, G.: On the temperature gradient induced interfacial gradient force, acting on precipitated liquid droplets in monotectic liquid alloys. Mater. Sci. Forum 508, 269–274 (2006).CrossRefGoogle Scholar
Moldover, M.R.: Interfacial tension of fluids near critical points and two-scale-factor universality. Phys. Rev. A 31, 1022–1033 (1985).CrossRefGoogle ScholarPubMed
Brandes, E.A. and Brook, G.B. (eds.): Smithells Metals Reference Book, 7th ed. (Butterworth-Heinemann, Oxford, 1992).Google Scholar
Pommrich, A.I., Meyer, A., Holland-Moritz, D., and Unruh, T.: Nickel self-diffusion in silicon-rich Si-Ni melts. Appl. Phys. Lett. 92, 241922 (2008).CrossRefGoogle Scholar
Roy, A.K. and Chhabra, R.P.: Prediction of solute diffusion coefficients in liquid metals. Metall. Trans. A 19A, 273–279 (1988).CrossRefGoogle Scholar