The structure and phase transformation behavior of rapidly solidified alloys in the Ge–Al–La system

The structure of rapidly solidified Ge–Al–La alloys, as investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM), is discussed in comparison with that of Al–Ge–TM (TM = transition metals) alloys. Rapidly solidified Ge–Al–La alloys, being metastable materials, transform into an equilibrium state upon heating. Phase transformations in the above-mentioned alloys were studied by differential scanning and isothermal calorimetry.