The Nanostructured Tini Shape-Memory Alloys: New Properties and Applications

V. G. Pushin 2Ruslan Z. Valiev 1

1. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K.Marks St.12, Ufa 450000, Russian Federation
2. Russian Academy of Sciences, Ural Division, Institute of Metal Physics, 18 S.Kovalevskaya str., GSP-170, Ekaterinburg 620219, Russian Federation

Abstract


The NANOstructured TiNi shape-memory alloys: New properties and
applications

V.G. Pushin, Institute of Metal Physics, Ural Division RAS, S.Kovalevskoi
Str. 18, 620219, Ekaterinburg, RUSSIA and R.Z. Valiev, Institute of Physics
of Advanced Materials, Ufa State Aviation Technical University, 450000, Ufa,
RUSSIA

Submitted to Symposium C

Symposium Interfacial effects and novel properties in nanomaterials.

Recent investigations testify to the fact that due to the shape-memory
effect and good mechanical properties the TiNi alloys are very
attractive for some medical and engineering applications. We
demonstrate in the present paper that these properties can be enhanced
essentially by forming nanostructures in these alloys through severe
plastic deformation (SPD), i.e., intence shearing under high imposed
pressure. Using computer modeling and experimental investigations
there have been defined the SPD regimes leading to formation of
homogeneous nanostructures with a grain size of less that 100 nm and
as a result considerable enhancement of physical and mechanical
properties of the alloys. New potentialities of nanostructured TiNi
alloys for structural and functional applications are considered.

 

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Presentation: oral at E-MRS Fall Meeting 2002, by V. G. Pushin
See On-line Journal of E-MRS Fall Meeting 2002

Submitted: 2003-02-16 17:33
Revised:   2009-06-08 12:55