Title : ( Study of the microstructure evolution of heat treated Ti-rich NiTi shape memory alloy )
Authors: Ghazal Tadayyon , Mohammad Mazinani , Yina Guo , Seyed Mojtaba Zebarjad , Syed A.M. Tofail , Manus J.P. Biggs ,
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Abstract
Martensitic evolution in Ti-rich NiTi alloy, Ti50.5Ni49.5, has been investigated as a function of annealing, solution treatment and a combination thereof and a detailed electron microscopic investigation carried out. Self accommodated martensite plates resulted in all heat treated samples. Martensitic b011N type II twins, which are common in NiTi shape memory alloys, was found in both as-received and heat-treated samples. Solution treated samples, additionally, showed {11-1} type I twinning was also found in samples that have been annealed after solution-treatment. Another common feature of the microstructure in both as-received and heat treated samples is the formation of Ti2Ni precipitates. The size, number and dispersions of these precipitates can be controlled by resorting to a suitable heat treatment e.g. solution treatment.
Keywords
, Nickel–titanium shape memory alloy, Microstructural evolution, Annealing, Solution treatment
@article{paperid:1053837,
author = {Tadayyon, Ghazal and Mazinani, Mohammad and Yina Guo and Seyed Mojtaba Zebarjad and Syed A.M. Tofail and Manus J.P. Biggs},
title = {Study of the microstructure evolution of heat treated Ti-rich NiTi shape memory alloy},
journal = {Materials Characterization},
year = {2016},
volume = {112},
month = {January},
issn = {1044-5803},
pages = {11--19},
numpages = {8},
keywords = {Nickel–titanium shape memory alloy; Microstructural evolution; Annealing; Solution treatment},
}
%0 Journal Article
%T Study of the microstructure evolution of heat treated Ti-rich NiTi shape memory alloy
%A Tadayyon, Ghazal
%A Mazinani, Mohammad
%A Yina Guo
%A Seyed Mojtaba Zebarjad
%A Syed A.M. Tofail
%A Manus J.P. Biggs
%J Materials Characterization
%@ 1044-5803
%D 2016
