Effect of thermal and thermo-mechanical cycling on the microstructure of Ni-rich NiTi shape memory alloys


Autoria(s): Suresh, KS; Bhaumik, Subir K; Suwas, Satyam
Data(s)

15/05/2013

Resumo

Microstructural changes of Ni-rich NiTi shape memory alloy during thermal and thermo-mechanical cycling have been investigated using Electron Back Scattered Diffraction. A strong dependence of the orientation of the prior austenite grain on the misorientation development has been observed during thermal cycling and thermo-mechanical cycling. This effect is more pronounced at the grain boundaries compared to grain interior. At a larger applied strain, the volume fraction of stabilized martensite phase increases with increase in the number of cycling. Deformation within the martensite leads to stabilization of martensitic phase even at temperatures slightly above the austenite finish temperature. Modulus variation with respect to temperature has been explained on the basis of martensitic transformation.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/46992/1/Mat_Lett_99_150_2013.pdf

Suresh, KS and Bhaumik, Subir K and Suwas, Satyam (2013) Effect of thermal and thermo-mechanical cycling on the microstructure of Ni-rich NiTi shape memory alloys. In: Materials Letters, 99 . pp. 150-153.

Publicador

Elsevier Science

Relação

http://dx.doi.org/10.1016/j.matlet.2013.03.014

http://eprints.iisc.ernet.in/46992/

Palavras-Chave #Materials Engineering (formerly Metallurgy)
Tipo

Journal Article

PeerReviewed