Effect of Cooling Rate on the Microstructure of Cu80Cr20 Alloys

Z.M. Zhou; W.J. Huang; J. Luo; X.P. Li; T. Zhou; B.B. Lei; C.H. Wang; H. Xia; C.Y. Peng

doi:10.4028/www.scientific.net/MSF.694.704

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HomeMaterials Science ForumMaterials Science Forum Vol. 694Effect of Cooling Rate on the Microstructure of...

Effect of Cooling Rate on the Microstructure of Cu₈₀Cr₂₀ Alloys

Abstract:

The effect of cooling rate on the microstructure of Cu80Cr20 alloys was studied by using vacuum non-consumable arc melting, vacuum induction melting, electromagnetic levitation and splat quenching. The microstructure evolution of the Cr-rich were analyzed by scanning electron microscopy (SEM) and optical microscopy. The results showed that nonuniform Cr-rich dendrite distributes on Cu-rich matrix for arc melted alloys and uniform Cr-rich dendrite distributes on Cu-rich matrix for electromagnetic levitation melted alloys and vacuum induction melted alloys. However, the Cr-rich phase show both dendrites and spheroids for splat quenched alloys. This means liquid phase separation occurred during rapid solidification.