3D FEM simulations for the homogeneity of plastic deformation in Al–Cu alloys during ECAP

Mahallawy, Nahed El; Shehata, F.; Hameed, Mohamed Abd El; Aal, Mohamed Ibrahim Abd El; Kim, Hyoung Seop

doi:10.1016/j.msea.2009.10.032

Cited by 69 publications

(31 citation statements)

References 38 publications

(55 reference statements)

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“…A great deal of research was focused on the description of the geometry of the used die with regard to the angle between the particular sections of the channel (φ) and the angle that denes the external radius of the generated channel (ψ) or the homogeneity of the imposed strain [5,6]. However, an overwhelming majority of this research involved pure Al or its alloys.…”

Section: Introductionmentioning

confidence: 99%

FEA of Plastic Flow in AZ63 Alloy during ECAP Process

2012

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Magnesium alloys based on MgAlZn system are very attractive materials in many industries due to their specic properties. One of common forming manners suitable for this kind of material is the application of severe plastic deformation method. This paper is focused on the deformation behavior of AZ63 alloy at equal channel angular pressing process in the temperature range of 250320• C. For this purpose nite element analysis was used. Main attention was devoted to the inuence of processing parameters on the material ow. Among other, changes of the ow during equal channel angular pressing in chosen regions of the pressed samples were monitored. As variables, temperature, friction coecient, strain rate, φ-angle or back pressure application were chosen. The comparison of the material ow lines at dierent conditions shows the aecting of material ow. There are obvious considerable dierences between regions adjacent to the inner radius and those adjacent to the outer radius. For example in the case µ = 0 the dead zone is delimited by the angle Ψ = 36• , while in the case of friction given by the coecient µ = 0.04, the value of the angle was Ψ = 26.5• .

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Section: Introductionmentioning

confidence: 99%

FEA of Plastic Flow in AZ63 Alloy during ECAP Process

2012

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“…In the past decade, the research focused on to strengthen Al alloys without any ageing treatment, via SPD (Kvačkaj et al, 2010 b). The finite element method (FEM) is a proven and reliable technique for analyzing various forming processes (Kvačkaj et al, 2007); (Kočiško et al, 2009); (Li et al, 2004); (Leo et al, 2007); (Cerri et al, 2009), (Figueiredo et al, 2006); (Mahallawy et al, 2010); (Yoon & Kim, 2008), in order to analyze the global and local deformation response of the workpiece with 4 nonlinear conditions of boundary, loading and material properties, to compare the effects of various parameters, and to search for optimum process conditions for a given material (Kim, 2001). The unique mechanical properties of the ECAPed material are directly affected by plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Severe Plastic Deformation on the Properties and Structural Developments of high purity Al and Al-Cu-Mg-Zr Aluminium Alloy

Kvačkaj¹,

Bidulská²,

Kočiško³

et al. 2011

Aluminium Alloys, Theory and Applications

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“…Figure 6 shows the deformation homogeneity using SSD quantifier as functions of pass number and plane section. Usually, increasing pass number results in an increase of strain distribution uniformity [18]. Thus, it is expected that SSD values will decrease with increasing pass number.…”

Section: Resultsmentioning

confidence: 99%

“…critical importance for understanding processing-microstructure relationship and providing guideline on the optimization of shape recovery properties. Finite element method (FEM) has been regarded as one of the important approaches to understand the deformation behavior and estimate the developed strain in the ECAP process [16][17][18]. However, to date, no report is available on the deformation homogeneity along different longitudinal planes of TiNi alloys.…”

Section: Simulation Modelsmentioning

confidence: 99%

Simulation and Experimental Investigation for the Homogeneity of Ti49.2Ni50.8 Alloy Processed by Equal Channel Angular Pressing

Zhang

Osman

et al. 2016

Metals

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Ti 49.2 Ni 50.8 shape memory alloy (SMA) was processed by equal channel angular pressing (ECAP) for eight passes at 450˝C. The deformation homogeneity was analyzed on various planes across the thickness by Deform-3D software. Strain standard deviation (SSD) was used to quantify deformation homogeneity. The simulation result shows that the strain homogeneity is optimized by the third pass. Deformation homogeneity of ECAP was analyzed experimentally using microhardness measurements. Experimental results show that the gradual evolution of hardness with increasing numbers of passes existed and the optimum homogeneity was achieved after three passes. This is in good agreement with simulation results.

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3D FEM simulations for the homogeneity of plastic deformation in Al–Cu alloys during ECAP

Cited by 69 publications

References 38 publications

FEA of Plastic Flow in AZ63 Alloy during ECAP Process

FEA of Plastic Flow in AZ63 Alloy during ECAP Process

Effect of Severe Plastic Deformation on the Properties and Structural Developments of high purity Al and Al-Cu-Mg-Zr Aluminium Alloy

Simulation and Experimental Investigation for the Homogeneity of Ti49.2Ni50.8 Alloy Processed by Equal Channel Angular Pressing

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