Nanoindentation analysis of the mechanical behavior of Zr-based metallic glasses with Sn, Ta and W additions

Sophie Nowak (1) , Patrick Ochin (1) , Alexandre Pasko (1) , Olek Maciejak (2) , Pascal Aubert (2) , Yannick Champion (1)

1 ICMPE - Institut de Chimie et des Matériaux Paris-Est
2 UEVE - Université d'Évry-Val-d'Essonne

Zr57Cu20Al10Ti8Ni5 and modified composition by adding Sn, W or Ta are studied using standard mechanical test and nanoindentation. Addition of refractory elements with a Sn micro-addition increases clearly the Young's modulus and the hardness of basic BMG. However, Sn reduces plasticity. Moreover these experiments allowed, in confine plasticity conditions, estimating an apparent activation volume associated to a plastic deformation (≈150 Å3).

Keywords: Metallic glasses; Nanoindentation; Mechanical properties

Domains: Mechanics of materials [physics.class-ph]; Material chemistry

Sophie Nowak, Patrick Ochin, Alexandre Pasko, Olek Maciejak, Pascal Aubert, et al.. Nanoindentation analysis of the mechanical behavior of Zr-based metallic glasses with Sn, Ta and W additions. Journal of Alloys and Compounds, 2009, 483 (1-2), pp.139-142. ⟨10.1016/j.jallcom.2008.07.178⟩. ⟨hal-02150284⟩