Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Study of the dynamic properties of a SMA mechanically shaped by hot rolling and ECAE
Submission Author:
Pedro Sabino dos Santos Barbosa , PE
Co-Authors:
Niédson Silva, Cezar Gonzalez, Carlos Augusto do Nascimento Oliveira, Carlos Jose de Araujo, Pedro Sabino dos Santos Barbosa
Presenter: Pedro Sabino dos Santos Barbosa
doi://10.26678/ABCM.COBEM2017.COB17-0330
Abstract
Shape memory alloys are materials often called intelligent because they have the ability to recover apparently plastic deformations in response to adequate external thermal stimuli. These alloys have great potential application as thermo-mechanical actuators in several sectors of the industry, which justifies the study and improvement of their properties in order to explore current needs in several areas of engineering. In this work, a shape memory alloy of the NiTi family was subjected to mechanical shaping by hot rolling and ECAE (Equal Channel Angular Extrusion) to improve the mechanical properties of these alloys. The samples were characterized by Differential scanning calorimetry (DSC) and dynamic-mechanical analysis (DMA) before and after the mechanical conformation processes. As a result, considerable changes were observed in the behavior of the calorimetric curves and damping of the samples, making it possible to compare the tests and the conditions of preparation of the material.
Keywords
NiTi Alloy, DSC, DMA, Mechanical Conformation, ECAE
