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
Mechanics of advanced materials and structures. 2022. Vol. 29, № 28. P. 7364-7374
Language
eng
337 Visitors338 Hits2 Downloads
Физико-технический факультет
A microstructure-based mechanical model of deformation-induced surface roughening in polycrystalline α-titanium at the mesoscale