Martensitic Transformation in Ti_(50)Ni_(25)Cu_(25) Shape Memory Alloy Studied by EBSD

摘要

Presented work summarizes studies done on the course of the martensitic transformation in the Ti_(50)Ni_(25)Cu_(25) alloy. Studies were carried out using scanning electron microscopy JEM 6480 equipped with an electron back scattered diffraction (EBSD) detector as well as a heating attachment. As-received ribbon was mainly amorphous. At the free side of the ribbon some fine randomly oriented crystalline grains were formed. During heating/cooling process the reversible martensitic transformation occurred with sequence: B2→B19. The crystallographic correlation between the B2 phase and the B19 martensite were confirmed. It allowed finding transformation matrix between both phases.