Rev. Phys. Appl. (Paris) 24, 733-739 (1989)
DOI: 10.1051/rphysap:01989002407073300

Martensitic transformation and shape memory effect in B2 intermetallic compounds of titanium

V.N. Khachin

Siberian Physico-Technical Institute, Tomsk State University, Tomsk, U.S.S.R.

Abstract
Crystallographic and kinetic characteristics of martensitic transformations and parameters of shape memory effect in B2 compounds of titanium Ti 50Ni50-xXx (X = Fe, Co, Pd, Pt, Au, Cu) and Ti50Pd50-xY x (Y = Fe, Co, Cu), where 0 ≤ x ≤ 50 are investigated. Temperature, hysteresis, value of reversible deformation and stress of martensitic shear for martensitic transformations and shape memory effect are defined. Compositions of alloys with optimum conditions for shape memory effect were determined.

Résumé
Nous avons étudié les aspects cristallographiques et cinétiques de la transformation martensitique et les paramètres de l'effet mémoire de forme dans les alliages Ti50Ni50-xXx (X = Fe, Co, Pd, Pt, Au, Cu) et Ti50Pd50-xY x (Y = Fe, Co, Cu), 0 ≤ x ≤ 50. Nous avons mesuré la température, l'hystérésis, la grandeur de la déformation et la contrainte du cisaillement martensitique pour la transformation martensitique et pour l'effet mémoire de forme. Nous avons déterminé les compositions d'alliage donnant des conditions excellentes pour l'effet mémoire de forme.

PACS
8130K - Martensitic transformations.
6470K - Solid solid transitions.
8140L - Deformation, plasticity and creep.
6220F - Deformation and plasticity.

Key words
martensitic transformations -- shape memory effects -- titanium alloys -- kinetics -- crystallography -- Ti alloys -- B2 intermetallic compounds -- hysteresis -- deformation -- stress -- martensitic shear -- shape memory effect