The present research focused on the
experimental results obtained for the Ni X Ti X-Y Hf Y .at%
(where X = 50; Y = Hf = 8, 11, 14, 17 and 20 .at%)
substitutive alloys with shape memory effect (SME).
The samples were fused by 3 different processes and
subjected to X-Ray Diffraction (XRD) and differential
scanning calorimetry (DSC) to demonstrate the
differences between structural and thermal properties
for equal compositions. In addition, chemically etched
samples were used for surface observation in two types
of microscopy: optical microscopy (OM) and scanning
electron microscopy (SEM). The results derived from
the three distinct processes were compared and
discussed, confirming several significant differences in
the properties studied here.
Keywords : DSC; Microscopy; Ni-Ti-Hf; Ternary Alloys; XRD.