Influence of elastic anisotropy on structural nanoscale textures

P Lloveras, T Castán, M Porta, A Planes, A Saxena - Physical review letters, 2008 - APS
We study the influence of elastic anisotropy on nanoscale precursor textures that exist in
some shape-memory alloys and show that tweed occurs in the limit of high elastic anisotropy …

Size-dependent martensitic transformation path causing atomic-scale twinning of nanocrystalline NiTi shape memory alloys

T Waitz, D Spišák, J Hafner, HP Karnthaler - Europhysics Letters, 2005 - iopscience.iop.org
Nanocrystalline NiTi alloys were processed by devitrification of an amorphous phase to
elucidate the impact of the nanocrystallinity on the thermally induced martensitic phase …

Competing accommodation mechanisms of the martensite in nanocrystalline NiTi shape memory alloys

T Waitz, W Pranger, T Antretter, FD Fischer… - Materials Science and …, 2008 - Elsevier
Two competing mechanisms that compensate the transformation strains of the martensite
are observed by transmission electron microscopy studies of nanocrystalline NiTi alloys. A …

Atomistic study of nanotwins in NiTi shape memory alloys

Y Zhong, K Gall, T Zhu - Journal of Applied Physics, 2011 - pubs.aip.org
Atomistic simulations are performed to study the structure and geometrical limit of nanoscale
twins in NiTi shape memory alloys. We analyze compound twins as narrow as∼ 1 nm …

Stress hysteresis and temperature dependence of phase transition stress in nanostructured NiTi—effects of grain size

A Ahadi, Q Sun - Applied Physics Letters, 2013 - pubs.aip.org
Stress hysteresis (⁠ H⁠) and temperature dependence of phase transition stress (d σ/d T)
are the two signatures of first-order phase transition in shape memory alloys. We studied the …

[HTML][HTML] Atomic scale processes of phase transformations in nanocrystalline NiTi shape-memory alloys

WS Ko, SB Maisel, B Grabowski, JB Jeon… - Acta Materialia, 2017 - Elsevier
Molecular dynamics simulations are performed to investigate temperature-and stress-
induced phase transformations in nanocrystalline nickel-titanium shape-memory alloys. Our …

Size effects on martensitic phase transformations in nanocrystalline NiTi shape memory alloys

T Waitz, T Antretter, FD Fischer… - Materials Science …, 2008 - journals.sagepub.com
Results of a systematic study are presented to review various effects of crystal size on the
martensitic phase transformations in nanocrystalline NiTi shape memory alloys. The …

Thermomechanical response of NiTi shape-memory nanoprecipitates in TiV alloys

SB Maisel, WS Ko, JL Zhang, B Grabowski… - Physical Review …, 2017 - APS
We study the properties of NiTi shape-memory nanoparticles coherently embedded in TiV
matrices using three-dimensional atomistic simulations based on the modified embedded …

[HTML][HTML] Grain size-dependent energy partition in phase transition of NiTi shape memory alloys studied by molecular dynamics simulation

K Nie, MP Li, WP Wu, QP Sun - International Journal of Solids and …, 2021 - Elsevier
Nanocrystalline NiTi shape memory alloys show fundamental changes in phase transition
behavior when the grain size is reduced down to nano-scale (grain size< 30 nm). However …

Size independent shape memory behavior of nickel–titanium

BG Clark, DS Gianola, O Kraft… - Advanced Engineering …, 2010 - Wiley Online Library
While shape memory alloys such as NiTi have strong potential as active materials in many
small‐scale applications, much is still unknown about their shape memory and deformation …