scholarly journals Nanoindentation into a metastable austenite triggers the martensitic phase transformation—An atomistic study

AIP Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 015228
Author(s):  
Jerome Meiser ◽  
Iyad Alabd Alhafez ◽  
Tilmann Beck ◽  
Marek Smaga ◽  
Ralf Müller ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation ◽  
Metastable Austenite ◽  
Atomistic Study

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.

Influence of Cr Alloying (1.5 to 5 at.%) on Martensitic Phase Transformation Temperatures in Co-Ni-Ga-Cr Thin Films

2019 ◽  
Vol 5 (1) ◽  
pp. 106-112 ◽  
Author(s):  
Peer Decker ◽  
Jill Fortmann ◽  
Steffen Salomon ◽  
Philipp Krooß ◽  
Thomas Niendorf ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transformation ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation ◽  
Transformation Temperatures

Shear and shuffling accomplishing polymorphic fcc γ → hcp ε → bct α martensitic phase transformation

2017 ◽  
Vol 136 ◽  
pp. 347-354 ◽  
Author(s):  
Xu-Sheng Yang ◽  
Sheng Sun ◽  
Hai-Hui Ruan ◽  
San-Qiang Shi ◽  
Tong-Yi Zhang
Keyword(s):  
Phase Transformation ◽  
Martensitic Phase ◽  
Martensitic Phase Transformation
Sign in / Sign up

Export Citation Format

Share Document