| Numéro |
J. Phys. IV France
Volume 112, October 2003
|
|
|---|---|---|
| Page(s) | 659 - 662 | |
| DOI | https://doi.org/10.1051/jp4:2003969 | |
J. Phys. IV France 112 (2003) 659
DOI: 10.1051/jp4:2003969
Processing of nanostructured TiNi-shape memory alloys: Methods, structures, properties, application
V.G. Pushin1, R.Z. Valiev2 and L.I. Yurchenko11 Institute of Metal Physics, Ural Division RAS, S. Kovalevskoi Str. 18, 620219 Ekaterinburg, Russia
2 Ufa State Aviation Technical University, The Institute of Physics of Advanced Materials, K. Marx Str. 12, 450000 Ufa, Russia
Abstract
In recent years nanostructured materials have been the subjects of intensive research due to their superior physical and mechanical
properties. The present study is a review of our own works on the processing and investigation of nanostructured TiNi-based
shape memory alloys. Various methods of production have been developed, which can be classified into three groups, based on
their approaches: i - superrapid solidification (melt quenching), ii - severe plastic deformation, and iii - combinations
of the deformation and thermal treatments. Influence of alloying, different mechanical-thermal treatments on mechanical properties
of alloys (shape memory effects, superelasticity, superplasticity, strengthening and so on), critical temperature and sequence
of martensitic transformations was studied. Peculiarities of pretransition states and phase transitions in alloys, microstructure
and morphology of martensitic phases at the transitions
,
,
,
,
were investigated in detail by TEM, X-ray diffraction, measurements of
(T),
(T).
© EDP Sciences 2003