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Article Dans Une Revue Journal of Applied Physics Année : 2022

Fracture energy of high-Poisson's ratio oxide glasses

Christian Gamst
  • Fonction : Auteur
Martin Østergaard
Lars Jensen
Morten Smedskjaer

Résumé

The apparent relationship between Poisson's ratio and fracture energy has been used to guide the discovery of ductile glasses with a brittle-to-ductile (BTD) transition at Poisson's ratio around 0.32. Most organic and metallic glasses possess Poisson's ratio above 0.32, and thus, feature fracture energy that is around three orders of magnitude higher than that of oxide glasses, which feature Poisson's ratio typically below 0.30. However, whether the BTD transition can also be observed in oxide glasses remains unknown due to the lack of fracture energy measurements on oxide glasses with high Poisson's ratio. In this work, we measure the fracture energy of six oxide glasses with high Poisson's ratio between 0.30 and 0.34. We find no clear relationship between the two parameters even in those that possess the same Poisson's ratio as ductile metallic glasses. This suggests that Poisson's ratio is not the main property to enhance the fracture energy of oxide glasses. To this end, we instead find a positive relation between fracture energy and Young's modulus of oxide glasses, and even for some metallic glasses, which could explain their absence of ductility.

Dates et versions

hal-03795064 , version 1 (03-10-2022)

Identifiants

Citer

Theany To, Christian Gamst, Martin Østergaard, Lars Jensen, Morten Smedskjaer. Fracture energy of high-Poisson's ratio oxide glasses. Journal of Applied Physics, 2022, 131 (24), pp.245105. ⟨10.1063/5.0096855⟩. ⟨hal-03795064⟩
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