Segmentation Effect on Inhomogeneity of [110]-Single Crystal Deformation

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Lychagin, D.V.^1,2,3 ; Nesterenko, E A Alfyorova V.P.^1

National Research Tomsk Polytechnic University, Lenin Avenue, 30, Tomsk

634050, Russia^1

National Research Tomsk State University, Lenin Avenue, 36, Tomsk

634050, Russia^2

Tomsk State University of Architecture, Building, Solyanaya Square, 2, Tomsk

634003, Russia^3

关键词: Compression axis;    Crystal geometry;    Fcc Single crystals;    Macro-segmentation;    Rectangular shapes;    Segmentation process;    Single crystal deformation;    Stress concentrators;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012052/pdf
DOI  :  10.1088/1757-899X/142/1/012052

来源: IOP

【 摘 要 】

This work presents a detailed analysis of segmentation process in FCC single crystals with compression axis [110] and side faces( 110) and (001) considering effect of octahedral shear crystal-geometry and basic stress concentrators. Sequence of meso-band systems formation on side faces is determined. Macro-segmentation patterns are specified, that are common to the FCC single crystals under investigation. It is proved that rectangular shape of highly compressed crystals, elongated in direction of operating planes, is conditioned by orientation symmetry of compression axis, single crystal side faces and shears directions, which are characteristic for the given orientation. The specified patterns are characteristic only for the samples with initial height-to-width ratio equal to 2. When varying sample height relative to the initial one, segmentation patterns will also vary due to crystal geometry variations.