Size effects of NiTi nanoparticle on thermally induced martensitic phase transformation

2018 ◽  
Vol 94 ◽  
pp. 47-54 ◽  
Author(s):  
Zhibin Chen ◽  
Shengjian Qin ◽  
Jiaxiang Shang ◽  
Fuhe Wang ◽  
Yue Chen
Keyword(s):  
Phase Transformation ◽  
Size Effects ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation ◽  
Thermally Induced

scholarly journals Atomistic Study on Size Effects in Thermally Induced Martensitic Phase Transformation of NiTi

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Sourav Gur ◽  
George N. Frantziskonis
Keyword(s):  
Thin Films ◽  
Phase Transformation ◽  
Size Effects ◽  
Martensite Phase ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation ◽  
Phase Fraction ◽  
Interatomic Potentials ◽  
Thermally Induced ◽  
Atomistic Study

The atomistic study shows strong size effects in thermally induced martensitic phase transformation evolution kinetics of equiatomic NiTi shape memory alloys (SMAs). It is shown that size effects are closely related to the presence of free surfaces; thus, NiTi thin films and nanopillars are studied. Quasi-static molecular dynamics simulations for several cell sizes at various (constant) temperatures are performed by employing well-established interatomic potentials for NiTi. The study shows that size plays a crucial role in the evolution of martensite phase fraction and, importantly, can significantly change the phase transformation temperatures, which can be used for the design of NiTi based sensors, actuators, or devices at nano- to microscales. Interestingly, it is found that, at the nanometer scale, Richard’s equation describes very well the martensite phase fraction evolution in NiTi thin films and nanopillars as a function of temperature.

Size effects on the martensitic phase transformation of NiTi nanograins

2007 ◽  
Vol 55 (2) ◽  
pp. 419-444 ◽  
Author(s):  
T. Waitz ◽  
T. Antretter ◽  
F.D. Fischer ◽  
N.K. Simha ◽  
H.P. Karnthaler
Keyword(s):  
Phase Transformation ◽  
Size Effects ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation
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