Undercooling and solidification of droplets of Cu-Ag alloy entrained in the primary phase

Autor: Pandey, O. P., Lele, S., Ojha, S. N., Mishra, N. S.
Zdroj: Journal of Materials Science; January 1995, Vol. 30 Issue: 2 p538-543, 6p
Abstrakt: The undercooling behaviour and formation of metastable microstructures have been studied in the melt of Cu-Ag alloy entrained in its primary phase. A maximum undercooling of 180 °C below the liquidus temperature was observed in isolated liquid droplets. The highly undercooled droplets underwent a massive transformation which resulted in the formation of a metastable solid-solution phase containing Ag-28 at% Cu. The metastable phase decomposed on ageing to form the equilibrium phases. The undercooling behaviour and evolution of metastable microstructures in droplets are discussed.
Databáze: Supplemental Index
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