Microstructural study of Ti50Pd50 and Ti50Ni50−xPdx alloys produced by combustion synthesis

The microstructure of the Ti-Ni-Pd ternary shape memory alloys (SMAs) produced by combustion synthesis was studied by scanning electron microscopy/energy-dispersive X-ray analysis (SEM/EDAX) and X-ray diffraction methods. It was found that, apart from the parent phase, Ti50Ni50-xPdx, there also exists a second phase with the stoichiometry of (Ni1−y, Pdy,)Ti2. Higher palladium and lower nickel contents were found in the parent Ti-Ni-Pd phase …