Completeness of beta-phase decomposition reaction in Cu-Al-Ag alloys

Completeness of beta-phase decomposition reaction in Cu-Al-Ag alloys

Author Silva, R. A. G. Autor UNIFESP Google Scholar
Machado, E. S. Google Scholar
Adorno, A. T. Google Scholar
Magdalena, A. G. Google Scholar
Carvalho, T. M. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade Federal de Sergipe (UFS)
UNESP
Abstract 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.
Keywords Alloys
Phase transitions
Thermal behavior
beta-phase decomposition
Language English
Date 2012-08-01
Published in Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 109, n. 2, p. 927-931, 2012.
ISSN 1388-6150 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 927-931
Origin http://dx.doi.org/10.1007/s10973-011-1815-z
Access rights Closed access
Type Article
Web of Science ID WOS:000306949000055
URI http://repositorio.unifesp.br/handle/11600/35126

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