Precipitation reaction in alpha-Cu-Al-Ag alloys

Silva, R.A.G.; Adorno, A.T.; Carvalho, T.M.; Magdalena, A.G.; Santos, C.M.A.

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/25488

Title:

Precipitation reaction in alpha-Cu-Al-Ag alloys

Author(s):

Institution:

Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual Paulista (UNESP)

ISSN:

1517-7076

Sponsorship:

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)

Sponsorship Process Number:

FAPESP: 06/0418-0

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.

Issue Date:

1-Jan-2011

Citation:

Matéria (Rio de Janeiro). Rede Latino-Americana de Materiais, v. 16, n. 3, p. 747-753, 2011.

Time Duration:

747-753

Publisher:

Rede Latino-Americana de Materiais

Keywords:

Ag additions
Cu-based alloys
kinetics

Source:

http://dx.doi.org/10.1590/S1517-70762011000300002

URI:

Access Rights:

Acesso aberto

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/25488

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