Difference between local atomic structures of the amorphous Ti2NiCu alloy prepared by melt quenching and severe plastic deformation

Specific features of the local atomic structure of the amorphous Ti2NiCu alloy obtained by melt quenching (MQ) and severe plastic deformation by high pressure torsion (HPT) have been studied by X-ray diffraction, transmission electron microscopy, and EXAFS spectroscopy. It is shown that the amorphous phases obtained by MQ and HPT methods differ in local atomic structure. In the amorphous state obtained by HPT method, the local atomic structure depends on the degree of deformation. (C) 2017 Elsevier B.V. All rights reserved.