Completeness of beta-phase decomposition reaction in Cu-Al-Ag alloys
Nenhuma Miniatura disponível
Data
2012-08-01
Autores
Silva, R. A. G.
Machado, E. S.
Adorno, A. T. [UNESP]
Magdalena, A. G. [UNESP]
Carvalho, T. M. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
The completeness of beta-phase decomposition reaction in the Cu-11wt%Al-xwt%Ag alloys (x = 0, 1, 2, and 3) was studied using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), and optical microscopy (OM). The results indicated that beta-phase transformations are highly dependent on cooling rate and on the presence of Ag. on slow cooling, the silver presence prevents the beta- and beta(1)-phase decomposition; thus, inducing the martensitic phase formation. After rapid cooling, a new thermal event is observed and the reverse martensitic transformation is shifted to lower temperatures.
Descrição
Palavras-chave
Alloys, Phase transitions, Thermal behavior, beta-phase decomposition
Como citar
Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 109, n. 2, p. 927-931, 2012.