1. A microstructure-based mechanical model of deformation-induced surface roughening in polycrystalline α-titanium at the mesoscale
- Author
-
R. Balokhonov, Maxim Pisarev, Olga Zinovieva, V.A. Romanova, and E. Emelianova
- Subjects
Materials science ,придание шероховатости поверхности ,Hexagonal crystal system ,Mechanical Engineering ,General Mathematics ,Mesoscale meteorology ,chemistry.chemical_element ,пластичность кристаллов ,Slip (materials science) ,Microstructure ,chemistry ,Mechanics of Materials ,Surface roughening ,метод конечных элементов ,системы скольжения ,General Materials Science ,Crystallite ,Composite material ,Deformation (engineering) ,Civil and Structural Engineering ,Titanium - Abstract
The article presents a microstructure-based mechanical model of hexagonal close-packed (hcp) a-titanium representative of the mesoscale and analyzes the contribution of a pyramidal slip to plastic deformation. We discuss the size of a representative volume element (RVE) enabling mesoscale phenomena to be correctly reproduced, focusing on deformation-induced surface roughening (DISR) and plastic strain localization. It is shown that the ignorance of a pyramidal slip in simulations leads to overestimated stress values in an hcp material. A polycrystalline model is capable of reproducing the mesoscale phenomena until plastic strain begins to localize at the length scale comparable to the model size
- Published
- 2021