Understanding the changes in ductility and Poisson's ratio of metallic glasses during annealing from microscopic dynamics

2015 ◽  
Vol 118 (3) ◽  
pp. 034901 ◽  
Author(s):  
Z. Wang ◽  
K. L. Ngai ◽  
W. H. Wang
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Microscopic Dynamics

Studying fatigue behavior and Poisson's ratio of bulk-metallic glasses

2007 ◽  
Vol 15 (5-6) ◽  
pp. 663-667 ◽  
Author(s):  
G.Y. Wang ◽  
P.K. Liaw ◽  
Y. Yokoyama ◽  
A. Peker ◽  
W.H. Peter ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Fatigue Behavior ◽  
Bulk Metallic Glasses ◽  
Poisson's Ratio

Correlation between Atomic Size Ratio and Poisson's Ratio in Metallic Glasses

2014 ◽  
Vol 31 (6) ◽  
pp. 066102 ◽  
Author(s):  
Ai-Kun Wang ◽  
Shi-Guang Wang ◽  
Rong-Jie Xue ◽  
Guo-Cai Liu ◽  
Kun Zhao
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Size Ratio ◽  
Poisson's Ratio ◽  
Atomic Size

Toughness, extrinsic effects and Poisson’s ratio of bulk metallic glasses

2012 ◽  
Vol 60 (12) ◽  
pp. 4800-4809 ◽  
Author(s):  
S.V. Madge ◽  
D.V. Louzguine-Luzgin ◽  
J.J. Lewandowski ◽  
A.L. Greer
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Bulk Metallic Glasses ◽  
Poisson's Ratio ◽  
Extrinsic Effects

scholarly journals Towards more uniform deformation in metallic glasses: The role of Poisson's ratio

2013 ◽  
Vol 560 ◽  
pp. 510-517 ◽  
Author(s):  
Yujie Wei ◽  
Xianqi Lei ◽  
Li-Shan Huo ◽  
Wei-Hua Wang ◽  
A.L. Greer
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Uniform Deformation

Poisson’s Ratio and Intrinsic Plasticity of Metallic Glasses

2008 ◽  
Vol 92 (26) ◽  
pp. 261902 ◽  
Author(s):  
S. J. Poon ◽  
Aiwu Zhu ◽  
G. J. Shiflet
Keyword(s):  
Metallic Glasses ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Intrinsic Plasticity

scholarly journals Revisiting the Dependence of Poisson’s Ratio on Liquid Fragility and Atomic Packing Density in Oxide Glasses

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2439 ◽  
Author(s):  
Martin B. Østergaard ◽  
Søren R. Hansen ◽  
Kacper Januchta ◽  
Theany To ◽  
Sylwester J. Rzoska ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Packing Density ◽  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Oxide Glass ◽  
High Fracture Toughness ◽  
Zinc Borate ◽  
Oxide Glasses ◽  
Atomic Packing ◽  
Liquid Fragility

Poisson’s ratio (ν) defines a material’s propensity to laterally expand upon compression, or laterally shrink upon tension for non-auxetic materials. This fundamental metric has traditionally, in some fields, been assumed to be a material-independent constant, but it is clear that it varies with composition across glasses, ceramics, metals, and polymers. The intrinsically elastic metric has also been suggested to control a range of properties, even beyond the linear-elastic regime. Notably, metallic glasses show a striking brittle-to-ductile (BTD) transition for ν-values above ~0.32. The BTD transition has also been suggested to be valid for oxide glasses, but, unfortunately, direct prediction of Poisson’s ratio from chemical composition remains challenging. With the long-term goal to discover such high-ν oxide glasses, we here revisit whether previously proposed relationships between Poisson’s ratio and liquid fragility (m) and atomic packing density (Cg) hold for oxide glasses, since this would enable m and Cg to be used as surrogates for ν. To do so, we have performed an extensive literature review and synthesized new oxide glasses within the zinc borate and aluminoborate families that are found to exhibit high Poisson’s ratio values up to ~0.34. We are not able to unequivocally confirm the universality of the Novikov-Sokolov correlation between ν and m and that between ν and Cg for oxide glass-formers, nor for the organic, ionic, chalcogenide, halogenide, or metallic glasses. Despite significant scatter, we do, however, observe an overall increase in ν with increasing m and Cg, but it is clear that additional structural details besides m or Cg are needed to predict and understand the composition dependence of Poisson’s ratio. Finally, we also infer from literature data that, in addition to high ν, high Young’s modulus is also needed to obtain glasses with high fracture toughness.

Sign in / Sign up

Export Citation Format

Share Document