Influencia de la deformación en frío sobre el proceso de precipitación en una aleación de Cu-4 at. % Ti

E. Donoso

doi:10.3989/revmetalm.0804

Authors

E. Donoso Universidad de Chile, Facultad de Ciencias Físicas y Matemáticas, Departamento de Ciencia de los Materiales

DOI:

https://doi.org/10.3989/revmetalm.0804

Keywords:

Copper, Cu-Ti, Microcalorimetry, Precipitation, Segregation

Abstract

By using differential scanning calorimetry (DSC), energetic and kinetic measurements associated with the different peaks displayed during linear heating of Cu-4 at.% Ti were made, employing quenched and cold-work material at different percentages of cold-rolling. Unlike to the situation observed in the quenched alloy in which precipitation is developed, in the deformed alloy such process is inhibited by the segregation of the solute atoms to partial dislocations. For calculating the dislocation density an expression governing the energy release accompanying recrystallization was applied, in order to determine, by appropriate models, the energy evolved during the pinning process.

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