In this study, microstructures and the solidification characteristics of heat treatable Cu-Al-Fe-Ni based alloys were investigated. Initial microstructural features of conventional alloys were examined by microscopical analysis and not only the martensitic structure but also several kappa phases embedded in copper based matrix were observed. Then, thermal analysis was performed in order to reveal the solidification sequence under cooling and the findings on the crystallization were in good agreement with the data reported earlier.

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