Preparation of W–15 wt%Ti prealloyed powders

W–15 wt%Ti prealloyed powders were prepared by high-energy milling W and TiH₂ powders, and the prealloyed powders were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). The size of W and TiH₂ grains was estimated by Williamson–Hall formula from width of XRD peaks. The results show that the grain size decreases with increasing milling time, while the lattice parameter increases. After milling for 40 h, nanocrystalline β-W_xTi_1−x solid solution with the form of thin laminar exists in the W–TiH₂ prealloyed powders.