Precipitation reaction in alpha-Cu-Al-Ag alloys

Precipitation reaction in alpha-Cu-Al-Ag alloys

Author Silva, Ricardo Alexandre Galdino da Autor UNIFESP Google Scholar
Adorno, A.t. Google Scholar
Carvalho, T.m. Google Scholar
Magdalena, A.g. Google Scholar
Santos, C.m.a. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual Paulista (UNESP)
Abstract The Ag-rich precipitates formation reaction in the Cu-9.22%at. Al-4.66%at. Ag, Cu-9.31%at. Al-5.83%at. Ag and Cu-9.37%at. Al-7.08%at. Ag alloys was studied using microhardness change measurements with temperature and time, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The results indicated that the Ag-rich phase formation is an interface controlled process with a zero-order mechanism, due to the amount of unsolved Ag that makes the precipitation reaction rate independent of Ag concentration.
Keywords Ag additions
Cu-based alloys
kinetics
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Date 2011-01-01
Published in Matéria (Rio de Janeiro). Rede Latino-Americana de Materiais, v. 16, n. 3, p. 747-753, 2011.
ISSN 1517-7076 (Sherpa/Romeo, impact factor)
Publisher Rede Latino-Americana de Materiais
Extent 747-753
Origin http://dx.doi.org/10.1590/S1517-70762011000300002
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000305880500002
SciELO ID S1517-70762011000300002 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/6240

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