Martensitic transformations in Ti-Ni-Cu alloys annealed

GEORGE CARLOS DOS SANTOS ANSELMO¹; WALMAN BENICIO DE CASTRO¹; CARLOS JOSÉ DE ARAÚJO¹

¹ UFCG

doi:10.20906/CPS/COB-2015-2498

Resumo

Alloys with shape memory effect have immense potential for applications in robotics, automotive and aeronautics industry, medicine and in the production of miniaturized actuators. Initially prismatic bars of Ti-Ni50-x-Cux (x =5, 6 e 7 at.Cu%) had been produced by plasma fusion, and het treated 800ºC - 15 minutes. Caracterization by: DSC, SMRT, XRD. The alloys showed phase transformations in single stage B2↔B19`. The transformation temperatures of the alloy Ti-Cu-Ni decrease with the increase of Cu.

Palavras-chave: Smart Materials ; Alloy Ti-Ni-Cu; Martensitic