In this paper, the crystallization behaviour of amorphous Cu56Zr7Ti37alloy using thermal electrical resistivity (TER) and differential scanning calorimetry (DSC) studies has been described. Isochronal TER and DSC measurements indicate that crystallization occurs in two stages. Isothermal crystallization studies of the alloy by TER show that the kinetics conforms to Johnson-Mehl-Avrami model. Avrami exponents derived from kinetics, between 1.1 and 1.2, imply that the crystallization processes are diffusion controlled with near zero nucleation. Activation energy has been found to increase with the transformed volume fraction. A plausible explanation has been presented by separating the contributions due to nucleation and crystal growth towards total activation energy.
参考文献
| [1] | Q. S. Zhang;H. F. Zhang;Y. F. Deng;B. Z. Ding;Z. Q. Hu .Bulk metallic glass formation of Cu-Zr-Ti-Sn alloys[J].Scripta materialia,2003(4):273-278. |
| [2] | R.M. Ribeiro;D.S. dos Santos;R.S. de Biasi .Crystallization kinetics of the (Fe_(50)Co_(50))_(73.5)Ag_1Nb_3Si_(13.5)B_9 amorphous alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):227-230. |
| [3] | A. K. Panda;I. Chattoraj;A. Mitra .Crystallization and magnetic properties of rapidly solidified Fe-Nb-M-Si-B (M = Cu, Mn, Pt)[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(0):950-953. |
| [4] | A.K. Panda;B. Ravikumar;S. BaSu .Crystallization and soft magnetic properties of rapidly solidified Fe_(73.5)Nb_3Cu_1 Si_(22.5-x)B_x(X=5, 9, 10, 11.25, 19) alloys[J].Journal of Magnetism and Magnetic Materials,2003(1/2):70-77. |
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