Microstructure and Crystallographic Texture of Silicon Iron Modified by Torsion Under Quasihydrostatic Pressure


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Аннотация

The electron backscatter diffraction, X-ray diffraction analysis, electromotive force instantaneous measurement, microhardness and coercive force measurement techniques are used to explore the development of the microstructure, crystallographic texture and physico-mechanical properties of silicon iron (Fe-3% Si) alloy under quasi-hydrostatic pressure in a Bridgman anvil. It is found that the alloy deformation is accompanied by its significant hardening. In-plane torsion test shows that the average grain size rapidly decreases down to 185 nm after a quater turn of the movable anvil. With the number of turns increased up to six the grain size gradually decreases down to 150 nm. At the same time, the average size of subgrains is less dependent on the deformation degree. The crystallographic texture evolution involves the formation of the strong {001} <110> texture component after comparatively small megaplastic deformation followed by the simple shear texture formation. Such a behavior can be correctly described in terms of non-equilibrium thermodynamics.

Авторлар туралы

A. Glezer

The National University of Science and Technology “MISiS”; The Bardin Central Research Institute of Ferrous Metallurgy

Хат алмасуға жауапты Автор.
Email: a.glezer@mail.ru
Ресей, Moscow; Moscow

A. Belyakov

National Research Belgorod State University

Email: a.glezer@mail.ru
Ресей, Belgorod

G. Rostovtsev

The Bardin Central Research Institute of Ferrous Metallurgy

Email: a.glezer@mail.ru
Ресей, Moscow

M. Odnobokova

National Research Belgorod State University

Email: a.glezer@mail.ru
Ресей, Belgorod

I. Shchetinin

The National University of Science and Technology “MISiS”

Email: a.glezer@mail.ru
Ресей, Moscow

A. Tomchuk

The Bardin Central Research Institute of Ferrous Metallurgy; The Bauman Moscow State Technical University

Email: a.glezer@mail.ru
Ресей, Moscow; Moscow

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