Superelastic property induced by low-temperature heating of a shape memory Ti–24Nb–0.5Si biomedical alloy

A. Ramalohary (1) , P. Castany (1) , P. Laheurte (2) , F. Prima (3) , T. Gloriant (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
3 LPCS - Laboratoire de Physico-Chimie des Surfaces

In this study, we have explored a new way to obtain a superelastic titanium-based alloy. Contrary to the classical method consisting to obtain the β microstructure directly by water quenching from the high temperature β-phase domain, this way consists in obtaining first a shape memory alloy displaying a fully α'' martensitic microstructure and then a superelastic behavior after applying a low temperature heating.

Mots clés: titanium; biomedical alloy; microstructure; martensite transformation; superelasticity

Domaines: Matériaux

A. Ramalohary, P. Castany, P. Laheurte, F. Prima, T. Gloriant. Superelastic property induced by low-temperature heating of a shape memory Ti–24Nb–0.5Si biomedical alloy. Scripta Materialia, 2014, 88, pp.25-28. ⟨10.1016/j.scriptamat.2014.06.009⟩. ⟨hal-01114428⟩