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Article Dans Une Revue Materials Science and Engineering: A Année : 2016

Three-dimensional investigation of grain orientation effects on void growth in commercially pure titanium

Marina Pushkareva
  • Fonction : Auteur
Javier Segurado
  • Fonction : Auteur
Javier Llorca
  • Fonction : Auteur

Résumé

The fracture process of commercially pure titanium was visualized in model materials containing artificial holes. These model materials were fabricated using a femtosecond laser coupled with a diffusion bonding technique to obtain voids in the interior of titanium samples. Changes in void dimensions during in-situ straining were recorded in three dimensions using x-ray computed tomography. Void growth obtained experimentally was compared with the Rice and Tracey model which predicted well the average void growth. A large scatter in void growth data was explained by differences in grain orientation which was confirmed by crystal plasticity simulations. It was also shown that grain orientation has a stronger effect on void growth than intervoid spacing and material strength. Intervoid spacing, however, appears to control whether the intervoid ligament failure is ductile or brittle

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Matériaux
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Dates et versions

hal-01538201 , version 1 (24-01-2022)

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Marina Pushkareva, Jérôme Adrien, Éric Maire, Javier Segurado, Javier Llorca, et al.. Three-dimensional investigation of grain orientation effects on void growth in commercially pure titanium. Materials Science and Engineering: A, 2016, 671, pp.221-232. ⟨10.1016/j.msea.2016.06.053⟩. ⟨hal-01538201⟩
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