Features of the influence of alternating elastic-plastic deformation on the mechanical properties of metallic materials

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The study of the effect of elastic-plastic alternating deformation on the mechanical properties of magnesium strips and low-carbon steel strips after processing on a roller straightening machine was carried out. The application of the strengthening process in 1 and 3 passes does not change the geometry of the strips. The yield strength of steel increases and the yield strength of magnesium decreases; at the same time, the yield plateau disappears on the tensile curve of steel samples, and a region similar to the easy slip stage in a single crystal appears on the tensile curve of magnesium samples after the elasticity stage. For an integral assessment of the effect of alternating deformation on the material and to determine its resistance to deformation, flow curves were constructed using the Nadai model.

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Sobre autores

A. Shelest

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Autor responsável pela correspondência
Email: shelest99@mail.ru
Rússia, Moscow

S. Rogachev

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences; National University of Science and Technology MISIS

Email: shelest99@mail.ru
Rússia, Moscow; Moscow

V. Yusupov

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: shelest99@mail.ru
Rússia, Moscow

V. Andreev

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: shelest99@mail.ru
Rússia, Moscow

R. Karelin

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: rdkarelin@gmail.com
Rússia, Moscow

V. Bazhenov

National University of Science and Technology MISIS

Email: shelest99@mail.ru
Rússia, Moscow

Bibliografia

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  5. ГОСТ 19903–2015. Прокат листовой горячекатаный. Сортамент. – (GOST 19903–2015. Hot-rolled sheet steel. Assortment.)
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  7. Зильберг, Ю.В. Влияние знакопеременного изгиба на структуру и свойства полос магниевого сплава AZ31 / Ю.В. Зильберг, Ф.В. Бах, Д. Борман, М. Родман, М. Шапер, М. Хелке // МиТОМ. 2009. №4. С.20–25. – (Zil’berg, Yu.V. Effect of alternating bending on structure and properties of AZ31 magnesium alloy strips / Yu.V. Zil’berg, F.V. Bah, D. Borman, M. Rodman, M.S. Haper, M. Helke // Metallurgy and heat treatment of metals. 2009. №4. P.20–25.)
  8. ГОСТ 14957–76. Сплавы магниевые деформируемые. Марки. – (GOST 14957–76. Magnesium deformable alloys. Grades.)
  9. ГОСТ 1497–84. Металлы. Методы испытаний на растяжение. – (GOST 1497–84. Metals. Tensile test methods.)
  10. ИТС 27–2021. Информационно-технический справочник по наилучшим доступным технологиям. Производство изделий дальнейшего передела черных металлов (Утвержден Приказом Росстандарта от 22.12.2021, № 2961). – (ITS 27-2021. Information and Technical Guide to the Best Available Technologies. Production of products of further processing of ferrous metals (Approved by the Order of Rosstandart from 22.12.2021, № 2961).)

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2. Fig. 1. Initial sections of the tensile curves of magnesium alloy in the initial state (solid line) and after alternating deformation (dashed line)

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3. Fig. 2. Cracks (a) and non-metallic inclusions (b) in the structure of magnesium alloys in the initial state

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4. Fig. 3. Initial part of the tensile stress diagram of low-carbon steel strip after heat treatment

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5. Fig. 4. Results of calculation of the flow curve linearized equation characteristics of low-carbon steel in the initial state by the least squares method

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