Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-26T10:29:46.245Z Has data issue: false hasContentIssue false
  • English
  • Français

A lateral remelting phenomenon of the primary phase below the temperature of peritectic reaction in directionally solidified Cu–Ge alloys

Published online by Cambridge University Press:  20 November 2013

Shujie Wang ,
Liangshun Luo ,
Yanqing Su ,
Jingjie Guo  and
Hengzhi Fu
Shujie Wang
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
Liangshun Luo
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
Yanqing Su*
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
Jingjie Guo
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
Hengzhi Fu
Affiliation:
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
*
a)Address all correspondence to this author. e-mail: suyq@hit.edu.cn
Get access

Abstract

During peritectic solidification, besides the longitudinal remelting of the primary phase at the temperature of peritectic reaction $\left( {T_{\rm{p}}^K} \right)$, a lateral remelting phenomenon of the primary phase below $T_{\rm{p}}^K$ is observed under high velocity in directionally solidified Cu–Ge alloys. The lateral remelting occurs continuously along a liquid channel as temperature decreases, and the lateral remelting velocity is larger than that of peritectic transformation. The lateral remelting leads to the morphological change of the primary dendrites, even the fragmentation of dendrite arms. The phenomenon also means that the classical theory calculating the volume fraction of the primary phase during peritectic transformation can need to be modified under some conditions. However, under low velocity, the phenomenon is not so significant. The phenomenon is explained by means of solidification and remelting theory.

Keywords

directional solidificationcrystal growthmicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 23 , 14 December 2013 , pp. 3261 - 3269
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.)

References

REFERENCES

Kerr, H.W. and Kurz, W.: Solidification of peritectic alloys. Int. Mater. Rev. 41, 129 (1996).CrossRefGoogle Scholar
Hillert, M.: Keynote Address: Eutectic and Peritectic Solidification, Solidification and Casting of Metals (The Metall Society, London, 1979), p. 81.Google Scholar
Chen, Y.Z., Liu, F., Yang, G.C., and Zhou, Y.H.: Nonequilibrium effects of primary solidification on peritectic reaction and transformation in undercooled peritectic Fe–Ni alloy. J. Mater. Res. 25, 1025 (2010).CrossRefGoogle Scholar
Kaya, H., Engin, S., Böyük, U., Çadırlı, E., and Maraşlı, N.: Unidirectional solidification of Zn-rich Zn-Cu hypoperitectic alloy. J. Mater. Res. 24, 3422 (2009).Google Scholar
Chen, Y.Z., Liu, F., Yang, G.C., Liu, N., Yang, C.L., and Zhou, Y.H.: Suppression of peritectic reaction in the undercooled peritectic Fe–Ni melts. Scr. Mater. 57, 779 (2007).Google Scholar
Choudhury, A., Nestler, B., Telang, A., Selzer, M., and Wendler, F.: Growth morphologies in peritectic solidification of Fe–C: A phase-field study. Acta Mater. 58, 3815 (2010).CrossRefGoogle Scholar
Boussinot, G., Brener, E.A., and Temkin, D.E.: Kinetics of isothermal phase transformations above and below the peritectic temperature: Phase-field simulations. Acta Mater. 58, 1750 (2010).Google Scholar
Fredriksson, H. and Nylén, T.: Mechanism of peritectic reaction and transformations. Metal. Sci. 16, 283 (1982).CrossRefGoogle Scholar
Stjohn, D.H.: The peritectic reaction. Acta Mater. 38, 631 (1990).CrossRefGoogle Scholar
Sha, G., O’Reilly, K.A.Q., Cantor, B., Titchmarsha, J.M., and Hamerton, R.G.: Quasi-peritectic solidification reactions in 6xxx series wrought Al alloys. Acta Mater. 51, 1883 (2003).Google Scholar
Ha, H.P. and Hunt, J.D.: A numerical and experimental study of the rate of transformation in three directionally grown peritectic systems. Metall. Mater. Trans. A 31, 29 (2000).CrossRefGoogle Scholar
Hu, X.W., Li, S.M., Gao, S.F., Liu, L., and Fu, H.Z.: Peritectic transformation and primary α-dendrite dissolution in directionally solidified Pb–26%Bi alloy. J. Alloys Compd. 501, 110 (2010).Google Scholar
Phelan, D., Reid, M., and Dippenaar, R.: Kinetics of the peritectic phase transformation: In-situ measurements and phase field modeling. Metall. Mater. Trans. A 37, 985 (2006).Google Scholar
Zhai, W., Geng, D.L., Wang, W.L., and Wei, B.: A calorimetric study of thermodynamic properties for binary Cu–Ge alloys. J. Alloys Compd. 535, 70 (2012).Google Scholar
Kohler, F., Germond, L., Wagnière, J-D., and Rappaz, M.: Peritectic solidification of Cu–Sn alloys: Microstructural competition at low speed. Acta Mater. 57, 56 (2009).CrossRefGoogle Scholar
Wang, S.J., Luo, L.S., Su, Y.Q., Dong, F.Y., Guo, J.J., and Fu, H.Z.: Two-phase separated growth and peritectic reaction during directional solidification of Cu–Ge peritectic alloys. J. Mater. Res. 28(10), 1372 (2013).Google Scholar