Investigation of thermal, mechanical and magnetic behaviors of the Cu-11%Al alloy with Ag and Mn additions

Journal Article · Mon Jan 14 23:00:00 EST 2013 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2012.11.007· OSTI ID:22163176

Silva, R. A.G., ^[1]; Paganotti, A.; Gama, S. ^[1]; Adorno, A. T.; Carvalho, T. M.; Santos, C. M.A. ^[2]

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1. Departamento de Ciencias Exatas e da Terra-UNIFESP, Diadema-SP (Brazil)
2. Instituto de Quimica - UNESP, Araraquara-SP (Brazil)

The investigation of thermal, mechanical and magnetic behaviors of the Cu-11%Al, Cu-11%Al-3%Ag, Cu-11%Al-10%Mn and Cu-11%Al-10%Mn-3%Ag alloys was made using microhardness measurements, differential scanning calorimetry, X-ray diffractometry, scanning electron microscopy, energy dispersion X-ray spectroscopy and magnetic moment change with applied field measurement. The results indicated that the Mn addition changes the phase stability range, the microhardness values and makes undetectable the eutectoid reaction in annealed Cu-11%Al and Cu-11%Al-3%Ag alloys while the presence of Ag does not modify the phase transformation sequence neither microhardness values of the annealed Cu-11%Al and Cu-11%Al-10%Mn alloys, but it increases the magnetic moment of this latter at about 2.7 times and decreases the rates of eutectoid and peritectoid reactions of the former. - Highlights: Black-Right-Pointing-Pointer The microstructure of Cu-Al alloy is modified in the Ag presence. Black-Right-Pointing-Pointer ({alpha} + {gamma}) phase is stabilized down to room temperature when Ag is added to Cu-Al alloy. Black-Right-Pointing-Pointer Ag-rich phase modifies the magnetic characteristics of Cu-Al-Mn alloy.

• OSTI ID: 22163176
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: Complete Vol. 75; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
CALORIMETRY
COPPER BASE ALLOYS
MAGNETIC MOMENTS
MICROHARDNESS
MICROSTRUCTURE
PHASE STABILITY
PHASE TRANSFORMATIONS
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY