Effect of temperature on the mechanical behaviour of a Ni-free zirconium-based bulk metallic glass - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2010

Effect of temperature on the mechanical behaviour of a Ni-free zirconium-based bulk metallic glass

Résumé

It is well known that nickel-free zirconium-based bulk metallic glasses are of interest for their possible good biocompatibility properties. In this framework, a Zr-Nb-Cu-Al-Fe bulk metallic glass was elaborated under the form of 2 mm diameter rods. The amorphous structure was confirmed by XRD and DSC and the associated reduced index were measured The mechanical properties of the glass were investigated at both room and high temperature. At room temperature, the glass exhibits some macroscopic plasticity The rheology at high temperature was studied by both strain rate jump tests and tests at constant strain rate. From these tests, It was difficult to identify an experimental window in which the amorphous structure could be maintained and in which viscoplastic forming could be carried out under low flow stresses. In the super-cooled liquid region, this behaviour is discussed in relation with the resistance to crystallization of the investigated glass and the nature of the formed crystallites was studied by XRD The mechanical properties of this glass are also compared to results previously obtained in the case of other zirconium-based bulk metallic glasses.

Domaines

Matériaux

Dates et versions

hal-00715132 , version 1 (06-07-2012)

Identifiants

Citer

M. Nascimento, Jennifer Ragani, Sébastien Gravier, J.J. Blandin, Jean-Louis Soubeyroux. Effect of temperature on the mechanical behaviour of a Ni-free zirconium-based bulk metallic glass. Journal of Alloys and Compounds, 2010, 495 (2), pp.348-351. ⟨10.1016/j.jallcom.2009.10.186⟩. ⟨hal-00715132⟩
320 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More