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Phase stability in multicomponent alloys

Abstract

In this project intend to study the phase stability and the microstructural evolution of the Cu-9%Al-10%Mn-3%Ag-x%Zr alloys (wt.%) and FeNiCuMnTiSn high-entropy alloys using scanning differential calorimetry (DSC), differential thermal analysis (DTA), thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, optical microscopy, X-ray dispersive energy spectroscopy, X-ray diffraction patterns, microhardness change with quenching temperature and aging time, magnetization change with temperature and applied field and stress-strain measurements. The results obtained will provide information on phase transitions and its stability ranges in studied alloys, on effects of Zr and Cu variations in the thermal, mechanical and magnetic behavior of the alloys. These materials may be utilized for development of thermomagnetic motors for applying in conversion energy. (AU)

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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications (12)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, L. S.; SILVA, R. A. G.. Alloys-by-design: Role of atomic properties on the phase equilibria of CuAlMn-based alloys. MATERIALS CHARACTERIZATION, v. 163, . (15/07496-7, 19/06717-0, 17/04809-0)
PAGANOTTI, A.; BESSA, C. V. X.; SILVA, C. C. S.; PEIXOTO, E. B.; DUQUE, J. G. S.; SILVA, R. A. G.. Effect of the Ni content on the thermal and magnetic properties of Fe-Ni-Co alloys. Materials Chemistry and Physics, v. 261, . (19/06717-0, 16/08583-3)
OLIVEIRA, A. B.; PEIXOTO, E. B.; DUQUE, J. G. S.; SILVA, L. S.; SILVA, R. A. G.. Bainite precipitation in a Cu-Al-Mn-Gd shape memory alloy. MATERIALIA, v. 16, . (19/06717-0)
PAGANOTTI, ANDRE; BESSA, C. V. X.; FERREIRA, L. D. R.; GAMA, S.; SILVA, R. A. G.. Annealing effect on thermal, mechanical and magnetic properties of Fe-Ni-Co alloys. Journal of Alloys and Compounds, v. 811, . (19/06717-0, 16/08583-3)
PAGANOTTI, A.; BESSA, C. V. X.; SILVA, L. S.; SILVA, R. A. G.. Metallic sample preparation for phase transformation analysis. METHODSX, v. 6, p. 2348-2366, . (19/06717-0, 16/08583-3)
FERREIRA, R. O.; SILVA, L. S.; SILVA, R. A. G.. Thermal behavior of as-annealed CuAlMnAgZr alloys. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, v. 146, n. 2, p. 595-600, . (19/06717-0)
PINTO, R. D. A.; FERREIRA, L. D. R.; SILVA, R. A. G.. Effects of Interactions Among Alloying Elements on the Microstructure, Phase Transitions, and Electrical Resistivity of the Cu81Al19 Alloy. METALS AND MATERIALS INTERNATIONAL, . (19/06717-0)
PILZ, C. B.; MATSUMURA, E. L.; PAGANOTTI, A.; CORNEJO, D. R.; SILVA, R. A. G.. Microstructure and phase stability of CuAlMnAgZr multicomponent alloys. Materials Chemistry and Physics, v. 241, . (19/06717-0)
DE SOUZA, JULIANA SARANGO; DE OLIVEIRA, MARA CRISTINA LOPES; ANTUNES, RENATO ALTOBELLI; DA SILVA, RICARDO ALEXANDRE GALDINO. Effects of Sn, Gd, and Mn additions on the surface chemistry and electrochemical behavior of CuAl-based alloys in sodium chloride solution. Applied Surface Science, v. 573, . (19/06717-0)
SOUZA, J. S.; SILVA, R. A. G.. Microstructure Evolution and Phase Transitions of the Annealed Cu-11%Al Alloy with Sn and Gd Additions. METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, v. 8, n. 6, p. 782-794, . (19/06717-0)
FERREIRA, R. O.; SILVA, L. S.; SILVA, R. A. G.. Thermal behavior of as-annealed CuAlMnAgZr alloys. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, . (19/06717-0)
SOUZA, J. S.; SILVA, R. A. G.. Microstructure Changes in Sn- or Gd-Modified Cu-11%Al-10%Mn Alloy. METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, . (19/06717-0)

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