Preparation by Twin Roll Casting and Characterization of TiNi Shape Memory Alloys Strips

Richard Portier; Philippe Vermaut; Patrick Ochin; Tomasz Goryczka; Jorge Malarría

doi:10.4028/www.scientific.net/SSP.130.121

Paper Titles

Structural Refinement and Homogeneity Range of Sm₆Al₃Si
p.101

Crytalline Precipitates in Silver Ion Conducting Materials
p.107

Refinement of the Cu Structure by Oscillatory Compression Test
p.111

Influence of the Ga Alloying on the Properties of NiAl Based Alloys
p.117

Preparation by Twin Roll Casting and Characterization of TiNi Shape Memory Alloys Strips
p.121

Effect of L2₁ Ordering on the Martensitic and Intermartensitic Transformations in a Ni-Mn-Ga Shape Memory Alloy
p.127

The Effect of the Annealing Parameters on the Structure and Characteristic Temperatures of the Nonstoichiometric Ni₂MnGa Alloys
p.135

Martensitic Transformation, Structure and Magnetic Properties of Co-Ni-Ga Ferromagnetic Shape Memory Alloys
p.141

Phase Transformation in Ti-Ni-Ta Shape Memory Alloy
p.147

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Preparation by Twin Roll Casting and Characterization of TiNi Shape Memory Alloys Strips

Abstract:

The thermoelastic martensitic transformation which gives remarkable functional properties to Shape Memory Alloys (SMA) is very sensitive to the chemistry of the alloys and to its microstructure. In many cases, especially for alloys with high transformation temperatures, applications are limited by the poor ductility. To overcome the brittleness of SMA, one approach can be effective : the development of non conventional production technologies which enable to obtain materials in forms close to requirements: strips of SMA have been prepared by Twin Roll Casting (TRC). The formation of a solid sheet with plane surface is only possible for a limited combination of the different machine parameters and they will be discussed. For comprehension of the process parameters effect, the attention will be focused on TiNi. Microstructures and functional properties will be examined in relation with the microstructures induced by the technique or after specific thermal treatment.

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Periodical:

Solid State Phenomena (Volume 130)

Pages:

121-126

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.130.121

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Online since:

December 2007

Authors:

Richard Portier, Philippe Vermaut, Patrick Ochin, Tomasz Goryczka, Jorge Malarría

Keywords:

Martensitic Transformation (MT), Shape Memory, Twin Roll Caster

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