Microstructure of Cu₇₅Cr₂₅ Alloys under Different Conditions

Abstract:

The microstructure of Cu₇₅Cr₂₅ alloys was investigated by using vacuum non-consumable arc melting, electromagnetic levitation and splat quenching. The microstructure and solidification behavior of the Cr-rich were investigated by scanning electron microscopy (SEM). The results showed that inhomogeneous Cr-rich dendrite distributes on Cu-rich matrix for arc melted alloys. The microstructure consisting of a fine dispersion of Cr-rich dendrite in a Cu-rich matrix for electromagnetic levitated alloys. However, the morphology and size of the Cr-rich phase vary greatly with the cooling rate for splat quenched alloys. The Cr-rich phase show both dendrites and spheroids, this means liquid phase separation occurred during rapid solidification.

• Periodical: Advanced Materials Research (Volumes 230-232)
• Pages: 247-250
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.230-232.247
• Online since: May 2011
• Authors: Zhi Ming Zhou, Wei Jiu Huang, Li Wen Tang, Xiao Ping Li, Jing Luo, Tao Zhou, Jie Zhan, Cheng Yun Peng
• Keywords: Cu₇₅Cr₂₅ Alloys, Liquid Phase Separation, Microstructure

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