Published date: Apr 15 2019

Journal Title: KnE Engineering

Issue title: XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers”

Pages: 281–287

DOI: 10.18502/keg.v1i1.4421

M.A. Zorina

M.S. Karabanalov

A.Yu. Zhilyakov

G.A. Terenya

S.V. Belikov

The structural and textural state of the nickel-based alloy (Ni–Cr–Mo) after cold rolling with degree of strain ∼ 0.7 was investigated by means of electron backscatter diffraction (EBSD). It is shown that a multicomponent texture is formed during the deformation, including orientations: strong {110} < 112 >, and weaker {110} < 001 > and {110} < 111 >. The structure contains band elements of the mesostructure, which can be interpreted as deformation twins and shear bands. The orientation of the crystal lattice in all bands formed in grains with the main component of the texture ∼ {110} < 112 > is close to {110} < 001 >. This orientation is connected to the matrix, by turning at an angle of 70 ∘ around the transverse direction. It corresponds to the twin disorientation or the coincidence site lattice special (CLS) Σ3 (60∘ , оcь < 111 >). It is shown that all band elements of the mesostructure in the alloy are formed by the mechanism of deformation twinning. Moreover, the special disorientation formed at the beginning of the process (the special boundary Σ3), is preserved in the deformation process as an energy stable object.

Keywords: FCC-metal, cold rolling, twinning, shear bands, texture.

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