Mechanisms of structure formation in low-carbon steel at warm twist extrusion

Pashinska, Elena; Varyukhin, V. N.; Добаткин, С. В.; Zavdoveev, Anatoliy

doi:10.1680/emr.12.00038

Cited by 10 publications

(5 citation statements)

References 8 publications

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“…3 , Завдовеев А. †,4 1 Университет Яна Длугоша в Ченстохове, факультет науки и технологий, Ченстохова, 42-200, Польша 2 Ченстоховский технологический университет, факультет технологии производства и материалов, Ченстохова, 42-200, Польша 3 Институт обработки металлов давлением, Познань, 61-139, Польша 4 Институт электросварки им. Е. О. Патона НАН Украины, Киев, 03150, Украина Изучено влияние исходного состояния и температуры обработки сплава АА5754 на его поведение при испытаниях горячим кручением.…”

Section: влияние исходного состояния и температуры обработки на структуру и свойства при горячем кручении сплава аа5754unclassified

Effect of initial state and processing temperature on structure and properties under hot torsion of AA5754 alloy

et al. 2021

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The effect of initial state and processing temperature of AA5754 alloy during hot torsion tests is presented. This deformation scheme allows simulating complex strain-stressed conditions. The tests were conducted on specimens solution heat treated in water and for specimens after extrusion and homogenizing treatment, respectively. It was determined that in the investigated range of deformation parameters, the solution treatment process has no effect on the plasticity of the alloy under investigation, but does have an influence on its hardness, microhardness distribution and grain size. In particular, the specimens deformed in the initial state behave according to the deformation pattern i. e. the maximum values of hardening and grain refinement occur on the deformed specimen surface, while the minimum values, inside the specimen. The same effect of deformation was observed for solution-treated specimens deformed at 250°C. While deformation in the extruded and homogenized state, the most uniform hardness distribution and the maximum deformation were exhibited by specimens deformed at 250°C. Thus, a successful attempt to incorporate knowledge obtained from severe plastic deformations (SPD) into the AA5XXX series aluminum alloys treatment has been made. The incorporation of SPD advantages allowed revealing age hardenable mechanism in non-age-hardenable alloy AA5XXX. All side investigation of structure and properties was made.

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Effect of initial state and processing temperature on structure and properties under hot torsion of AA5754 alloy

et al. 2021

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“…The maps confirm the idea that the formed small grains (less of 3 μm) are recrystallized. A possible mechanism of formation of this type of grains is fragmentation of coarse grains [16] to the grain size down to 3 μm. This type of grains should demonstrate structure imperfection due to a large number of defects and related noticeable lattice distortions.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Shear impact during steel wire drawing on grain boundaries and mechanical properties

Zavdoveev

Baudin

Rogante³

et al. 2020

Lett. Mater.

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Shear deformation is one of the effective ways for grain boundary engineering. In the current contribution, the effect of the shear deformation incorporated into the conventional drawing process is shown. A specific feature of this experimental technology is a reduction of the structural anisotropy. This effect is related to the application of dies with shear that makes the metal flow to change its direction. In particular the grain refinement is stronger. The experimental drawing technology results in an extensive increase in the fraction of small grains (less than 3 μm in size) and a decrease in the fraction of large grains. A large amount of small grains with high-angle boundaries in this case is registered. The formation of this kind of grains is explained by progress in competing processes of large grain fragmentation and continuous dynamic recrystallization. The result is the change of the type of the grain boundaries from smooth to serrated ones and the formation of unclosed high-angle grain boundaries. Besides, it has been demonstrated that a certain part of small grains provides grain boundary sliding. The comparative analysis of the hardness tests has demonstrated increasing hardness with deformation accumulation, but after the classical drawing, the hardness grows linearly and stepwise after the experimental shear drawing. The physical reasons of such behaviour are explained by microstructural features which are discussed in current contribution.

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“…This refers particularly to aluminum and Al alloys, [41][42][43]49,52,72,118,119] copper and Cu alloys, [25,34,36,39,45,63,65,68,[120][121][122][123] titanium and its alloys, [64,65,70,[124][125][126][127][128][129] as well as various steels. [61,62,73] There are some limitations on the applicability of TE processing to high strength materials. They come both from the billet material itself, which can be too brittle to be processed, and from the tooling material.…”

Section: Ultrafine Grained Structurementioning

confidence: 99%

“…A. Galkin the Ukrainian National Academy of Sciences. At present, TE and cognate processing techniques, as well as the materials obtained using these methods are a subject of research at several materials laboratories in such countries as China, [15][16][17][18][19][20] the Czech Republic, [21] Germany, [22][23][24] France, [23,25,26] India, [27][28][29][30][31] Iran, [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] Japan, [51][52][53][54][55] Korea, [56][57][58][59][60] Russia, [61][62]…”

Section: Introductionmentioning

confidence: 99%

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

et al. 2017

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Twist extrusion (TE) is one of the most popular techniques of severe plastic deformation, aiming at imparting to a material a tailored microstructure and the associated property improvement. The article provides a survey of the literature on the mechanics of TE and the effect it has on the structure, texture, and the attendant properties of various materials, including metals and alloys, powder materials, and polymers. Special emphasis is placed on vortex flow during TE and its hitherto unexplored potential for producing micro-and macrostructures that promise superior properties of the materials. In particular, the possibility of creating novel hybrid materials with chiral inner architecture is demonstrated. The survey is concluded by a presentation of examples of practical applications of TE.

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Mechanisms of structure formation in low-carbon steel at warm twist extrusion

Cited by 10 publications

References 8 publications

Effect of initial state and processing temperature on structure and properties under hot torsion of AA5754 alloy

Effect of initial state and processing temperature on structure and properties under hot torsion of AA5754 alloy

Shear impact during steel wire drawing on grain boundaries and mechanical properties

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

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