Ag-rich phase formation in the Cu-6 wt% Al alloy with Ag additions
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Data
2008-08-01
Autores
Carvalho, T. M. [UNESP]
Adorno, A. T. [UNESP]
Silva, R. A. G. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Pergamon-Elsevier B.V. Ltd
Resumo
Ag-rich phase formation in the Cu-6 wt% Al alloy with additions of 4, 6, 8, 10, and 12 wt% Ag was studied using microhardness changes with temperature and time, differential thermal analysis (DTA), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), and X-ray diffractometry (XRD). The results indicated that the Ag-rich phase formation follows two different processes depending on Ag concentration. For alloys with 4 and 6 wt% Ag the precipitate formation occurs as a second-order mechanism while for alloys with 8, 10 and 12 wt% Ag a zero-order reaction was observed. (C) 2008 Elsevier Ltd. All rights reserved.
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alloys, diffusion
Como citar
Journal of Physics and Chemistry of Solids. Oxford: Pergamon-Elsevier B.V. Ltd, v. 69, n. 8, p. 2025-2031, 2008.