Microstructure Evolution and Phase Transitions of the Annealed Cu–11%Al Alloy with Sn and Gd Additions

• DOI: 10.1007/s13632-019-00586-5
• Publication Date: 2019-10-31T02:11:36Z
• Authors: J. S. Souza; R. A. G. Silva
• Keywords: Energy-dispersive X-ray spectroscopy

The effects of Sn or Gd additions on the microstructure and phases transitions of the Cu–11%Al alloy (composition in wt.) were studied by Vickers microhardness measurements as a function of quenching temperature, optical microscopy (OM), scanning electronic microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The results showed that the addition of Sn stabilizes the $$ \beta $$ phases, whereas the addition of Gd modifies the alloy microstructure, but it does not significantly interfere on the phase transitions observed in the Cu–11%Al alloy.