TEM Studies on the Microstructural Changes during Thermo-Mechanical Cycling of NiTi Shape Memory Alloy Wire

J. Bhagyaraj; Gouthama Gouthama; K. Venkata Ramaiah; C.N. Saikrishna; S.K. Bhaumik

doi:10.4028/www.scientific.net/MSF.702-703.904

Paper Titles

Microstructural Irreversibilities under Thermal Cycling in Ni-Ti-Fe Shape Memory Alloys
p.888

Evolution of Texture and Microstructure during Cold Rolling and Annealing of Fe-14Mn-6Si-9Cr-5Ni Shape Memory Alloy
p.892

Deformation Induced Phase Seperation of Ni₄₅Co₅ Mn_36.7In_13.3 Alloy at High Temperature
p.896

Variants of Texture Formation by Rolling of Ti-Ni Single Crystals with Shape Memory Properties
p.900

TEM Studies on the Microstructural Changes during Thermo-Mechanical Cycling of NiTi Shape Memory Alloy Wire
p.904

Texture Formation in Thin Tapes from Ni-Based Ternary Alloys with Cr, W, Mo and V
p.908

Texture of Electrodeposited Nanocrystalline Ni-Fe with Banded Structure
p.912

An EBSD Study of Gallium Arsenide Nanopillars
p.916

Investigation on Texture Evolution in Plastic Deformation Layer of SMAT Iron
p.920

HomeMaterials Science ForumMaterials Science Forum Vols. 702-703TEM Studies on the Microstructural Changes during...

TEM Studies on the Microstructural Changes during Thermo-Mechanical Cycling of NiTi Shape Memory Alloy Wire

Abstract:

NiTi based shape memory alloys (SMAs) have been identified as potential candidates for sensors and actuators in various industrial applications. During service life of actuators, SMAs are subjected to large number of stress/strain cycles through the complete transformation range, known as thermomechanical cycling (TMC), which introduces various defects in the material. In the present study, an attempt has been made to understand the microstructural changes taking place during thermo-mechanical cycling of NiTi wires using Transmission Electron Microscope (TEM). These microstructural observations have been discussed in conjunction with the cyclic shape memory behavior of the wires.

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Periodical:

Materials Science Forum (Volumes 702-703)

Pages:

904-907

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.702-703.904

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Online since:

December 2011

Authors:

J. Bhagyaraj, Gouthama Gouthama, K. Venkata Ramaiah, C.N. Saikrishna, S.K. Bhaumik

Keywords:

Nitinol, Shape Memory Alloy Actuator, Thermomechanical Cycling

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