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PHASE TRANSFORMATIONS DURING HEATING OF AMORPHOUS/NANOCRYSTALLINE Ni–Ti POWDERS
https://doi.org/10.1142/S021797921005524XCited by:1 (Source: Crossref)
Abstract
Amorphous/nanocrystalline 50Ni–50Ti powders were synthesized from elemental Ti and Ni powders by solid state synthesis utilizing low energy mechanical alloying with times up to 100 h. The produced powders were investigated by X-ray diffraction and differential scanning calorimetry to study phase transformations that occurred during heating in the calorimeter. It was found that at the first stage of the heating process, a disordered NiTi phase was formed at temperature of about 400°C. Further investigations indicated that this phase transformed into the Ni3Ti and Ti2Ni intermetallic compounds after heating at a temperature of about 800°C.
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