Finite element simulation and comparison of a shear strain and equivalent strain during ECAP and asymmetric rolling

Pesin, Alexander; Pustovoytov, Denis; Shveyova, T.V.; Vafin, R.

doi:10.1088/1757-899x/293/1/012007

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…This requires at least three or four passes of ECAP with a simple shear. This level can be obtained by single-pass asymmetric rolling with simultaneous pure and simple shear, when shear angle ϕ is no less than 80 • (Figure 26) [73].…”

Section: Shear Strain and Equivalent Strainmentioning

confidence: 99%

Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review

Pustovoytov

Pesin

Tandon

2021

Metals

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Asymmetric sheet rolling is a process used when there are differences in any technological parameters in the horizontal plane across the width of the deformation zone or in the vertical plane between the top and bottom surfaces of the deformation zone. Asymmetry can either have random causes, or it can be created purposefully to reduce rolling force, improve sheet flatness, minimize the ski effect, obtain thinner sheets and for grain refinement and improvement of texture and mechanical properties of sheet metals and alloys. The purpose of this review is to analyze and summarize the most relevant information regarding the asymmetric (hot, warm, cold, cryo) rolling processes in terms of the effect of purposefully created asymmetry on grain size and mechanical properties of pure Mg, Al, Ti and their alloys. The classification and fundamentals of mechanics of the asymmetric rolling process are presented. Based on the analysis of publications related to asymmetric rolling, it was found that a superior balance of strength and ductility in pure Mg, Al, Ti and their alloys could be achieved due to this processing. It is shown that asymmetric rolling in comparison with conventional severe plastic deformation methods have an undeniable advantage in terms of the possibility of the production of large-scale sheets.

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Section: Shear Strain and Equivalent Strainmentioning

confidence: 99%

Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review

Pustovoytov

Pesin

Tandon

2021

Metals

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“…Taking advantage of the previous work, Pesin and coworkers [24] performed FE simulations to investigate and compare the deformation on the aluminum alloy 5083 obtained by a single-pass equal-channel angular pressing (ECAP) symmetric and asymmetric rolling processes. The ECAP is limited to small-size samples, which represents a drawback for industrial applications.…”

Section: Sverdlik and Coworkersmentioning

confidence: 99%

A Short Review on the Finite Element Method for Asymmetric Rolling Processes

Graça

Vincze

2021

Metals

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Several studies on asymmetric rolling processes use the Finite Element Method (FEM) to predict material deformation and optimize process parameters, such as rolls’ forces and torques. Early studies focused on the observation and measure of curvature effects due to the asymmetric conditions. However, these models could not predict mechanical behavior associated with the texture evolution during the rolling processes. More recent studies introduced crystal plasticity (CP) models into the FEM to analyze and quantify the texture evolution during plastic forming. However, these coupled techniques need more investigation, especially concerning the mechanical behavior of the material during and after multi-stage ASR procedures. The purpose of this work is to present an up-to-date literature review on the implementation of asymmetric rolling processes in finite element analysis. It shows a summarized overview of the asymmetric rolling model parameters from different authors and gives a brief description of the crystallographic models used in their studies. In the end, some suggestions for future work dedicated to the analysis of ASR through FEM are given.

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Finite element analysis of material deformation behaviour during DRECE: the sheet metal SPD process

Tkocz

Kowalczyk

Bulzak

et al. 2023

Archiv.Civ.Mech.Eng

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The material deformation behaviour during the innovative SPD process called DRECE (Dual Rolls Equal Channel Extrusion) has been analysed by FEM simulations. In the process, a workpiece in the form of a strip is subjected to plastic deformation by passing through the angular channel; however, the workpiece dimensions remain the same after a pass is finished. Performing consecutive passes allow for increasing the effective strain in the material to a required level. In the conducted simulations two various channel angles (108° and 113°) have been taken into consideration, as well as two processing routes, A and C (without and with turning the strip upside-down between consecutive passes, respectively). The analysis of simulation results has revealed that significant strain and stress inhomogeneities across the strip thickness are generated in a single DRECE pass. The die design (the inner and outer corner radius) and friction conditions affect the material flow, reducing significantly the shear strain in the near-surface regions of the strip. The strain inhomogeneity can be effectively reduced by choosing the processing route C. The strain distributions and the corresponding tensile test results have confirmed that the smaller channel die angle allows to generate larger strain and higher strength of the strip but also reduces its ductility more than the die setup with the larger channel die angle.

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Finite element simulation and comparison of a shear strain and equivalent strain during ECAP and asymmetric rolling

Cited by 3 publications

References 8 publications

Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review

Asymmetric (Hot, Warm, Cold, Cryo) Rolling of Light Alloys: A Review

A Short Review on the Finite Element Method for Asymmetric Rolling Processes

Finite element analysis of material deformation behaviour during DRECE: the sheet metal SPD process

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