Effect of the mechanical activation time on microstructure and microhardness of tantalum powder
In the work, we studied the microstructural peculiarities of tantalum powder depending on the mechanical activation time by X-ray diffraction and scanning and transmission electron microscopy. The parameters of grain-subgrain structure and defect structure were quantitatively estimated. Peculiarities and formation mechanisms of high-defect structural states and their effect on microhardness were discussed.