info:eu-repo/semantics/article
Calorimetric study of spinodal decomposition in β-Cu–Al–Mn
Fecha
2020-01Registro en:
Velazquez, Diego Ezequiel; Romero, Ricardo; Calorimetric study of spinodal decomposition in β-Cu–Al–Mn; Springer; Journal of Thermal Analysis and Calorimetry; 143; 1; 1-2020; 19-25
1388-6150
CONICET Digital
CONICET
Autor
Velazquez, Diego Ezequiel
Romero, Ricardo
Resumen
We report data obtained from the spinodal decomposition in samples of two compositions of intermetallic Cu–Al–Mn shape memory alloys. Detailed experimental information has been collected by means of differential scanning calorimetry (DSC). Spinodal decomposition was induced by isothermal treatments at different temperatures within the miscibility gap. To determine the precipitation kinetics, after each isothermal treatment particle dissolution curves were obtained by DSC. From the dissolution curves, various aspects of the precipitation process were determined, such as particles dissolution enthalpy; initial precipitate volume fraction evolution; non-isothermal dissolution characteristics; dissolution activation energy and particle distribution information. Regardless of the composition, the determined activation energy was 77 kJ mol−1. Diffusion of Mn atoms seems to be the fundamental factor that controls the studied processes.