| Texto completo | |
| Autor(es): |
Pilz, C. B.
[1]
;
Matsumura, E. L.
[1]
;
Paganotti, A.
[1]
;
Cornejo, D. R.
[2]
;
Silva, R. A. G.
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Paulo, ICAQF, Diadems, SP - Brazil
[2] Univ Sao Paulo, Inst Fis IFUSP, Sao Paulo, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Materials Chemistry and Physics; v. 241, FEB 1 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
In this work, the effects of Zr additions on the microstructure and phase stability of the initially annealed Cu-9Al-10Mn-3Ag alloy were studied using optical microscopy (OM), differential thermal analysis (DTA), microhardness measurements, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and magnetization measurements as a function of temperature and applied field. The results showed that the increase in Zr concentration decreased the alpha-Cu phase grain size and increased the alloys microhardness. The Curie temperature of the alloy was not modified by the Zr additions. Moreover, the precipitation of Ag-rich phase occurred preferentially at the intergranular region and the addition of 5%Zr increased the melting temperature of the Cu-9Al-10Mn-3Ag alloy and contributed for the formation of the Cu2ZrAl phase. A mechanism was proposed for the Cu2ZrAl phase formation in the Cu-9Al-10Mn-3Ag-5Zr alloy. (AU) | |
| Processo FAPESP: | 19/06717-0 - Estudo da estabilidade de fases em ligas multicomponentes |
| Beneficiário: | Ricardo Alexandre Galdino da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |