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Durinck, Julien
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Publications (4/4 displayed)
- 2023Atomic scale simulations of { 112 } symmetric incoherent twin boundaries in goldcitations
- 2018The effect of surface step and twin boundary on deformation twinning in nanoscale metallic systemscitations
- 2017Grain Size Dependence of Elastic Moduli in Nanocrystalline Tungstencitations
- 2005Influence of crystal chemistry on ideal plastic shear anisotropy in forsterite: First principle calculationscitations
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article
Grain Size Dependence of Elastic Moduli in Nanocrystalline Tungsten
Abstract
<jats:p>Using atomistic calculations with a Finnis-Sinclair type potential and molecular statics and dynamics methods, we performed a series of deformation tests on nanocrystallised tungsten samples presenting various microstructures; we calculated the elastic constants of polycrystalline tungsten for average grain diameters ranging from 2.7 to 6.7 nm. The results show that both Young’s and the shear moduli decrease by over 60% as the average grain diameter decreases below 3 nm. This diminution appears to be highly correlated to the grain boundary volume fraction. The results are compared to conclusions from other authors.</jats:p>