Hierarchy of the macrozone features in Ti-6Al-4V alloy inferred from massive polycrystal plasticity calculations

Autor: Xiaolei Chen, Lionel Germain, Stéphane Berbenni

Publikováno v: Journal of Materials Research and Technology, Vol 29, Iss , Pp 2468-2482 (2024)

Titanium alloys exhibit complex microstructures containing heterogeneities at different length scales. Microtextured regions (MTRs), usually called “macrozones”, exhibit grains having the same or nearly the same crystallographic orientation. They

Externí odkaz: https://doaj.org/article/54bab84ce428496d8e5e6fa394b07ec1

Atomic Force Microscopy Study of Discrete Dislocation Pile-ups at Grain Boundaries in Bi-Crystalline Micro-Pillars

Autor: Xiaolei Chen, Thiebaud Richeton, Christian Motz, Stéphane Berbenni

Publikováno v: Crystals, Vol 10, Iss 5, p 411 (2020)

Compression tests at low strains were performed to theoretically analyze the effects of anisotropic elasticity, misorientation, grain boundary (GB) stiffness, interfacial dislocations, free surfaces, and critical force on dislocation pile-ups in micr

Externí odkaz: https://doaj.org/article/3a261de485f54ab39005ef6441aaf3af

Micromechanical Modeling of the Elasto-Viscoplastic Behavior and Incompatibility Stresses of β-Ti Alloys

Autor: Safaa Lhadi, Maria-Rita Chini, Thiebaud Richeton, Nathalie Gey, Lionel Germain, Stéphane Berbenni

Publikováno v: Materials, Vol 11, Iss 7, p 1227 (2018)

Near β titanium alloys can now compete with quasi-α or α/β titanium alloys for airframe forging applications. The body-centered cubic β-phase can represent up to 40% of the volume. However, the way that its elastic anisotropy impacts the mechani

Externí odkaz: https://doaj.org/article/648d6848cd644f6c8efbebc2d9c0e2fa

A microstructure-based three-scale homogenization model for predicting the elasto-viscoplastic behavior of duplex stainless steels

Autor: Eyram Tsekpuia, Adrien Guery, Nathalie Gey, Stéphane Berbenni

Publikováno v: International Journal of Plasticity. 164:103575

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc5a5f8c8d91e3b8a9620582289f40d3
https://doi.org/10.1016/j.ijplas.2023.103575

A time-incremental homogenization method for elasto-viscoplastic particulate composites based on a modified secant formulation

Autor: Stéphane Berbenni

Publikováno v: International Journal of Solids and Structures
International Journal of Solids and Structures, Elsevier, 2021, pp.111136. ⟨10.1016/j.ijsolstr.2021.111136⟩

Starting from the exact solution of the heterogeneous linear viscoelastic Eshelby ellipsoidal inclusion problem obtained in the time domain for an ellipsoidal inclusion embedded in an isotropic matrix (Berbenni et al., 2015), a direct time-incrementa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a4f09f5e046ff676d74951f7f6b2274
https://hal.univ-lorraine.fr/hal-03278434/document