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<p>New cyclic extrusion compression angular pressing (CECAP) is a new approach to severe plastic deformation (SPD) to improve the mechanical properties of metals. Moreover, the studies showed that the plastic flow on New CECAP process has not been investigated yet. Thus, here, FEM was used to investigate the deformation flow, damage, mean stress and strain distribution. The flow net for various corner radius of equal channel angular pressing (ECAP) zone, and the longitudinal distance of ECAP and exit extrusion zones, were considered. It was found that for the radius of 5&#xa0;mm in the zone after ECAP, the upper elements of the sample move quickly compared to lower elements. However, for higher corner radius of 10&#xa0;mm, the condition is different. The variations of the damage and mean stress during deformation for two points (A and B) along the longitudinal section showed that for both points, at the first stage, there is steady downward trend until about − 190&#xa0;MPa. To investigate the accuracy of the model, the experimental samples were used to study the material flow on this process. Moreover, the comparison between hardness and effective strain showed that the distribution patterns have considerable similarities.</p>

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Influence of New Cyclic Extrusion Compression Angular Pressing on Material Flow and Damage Accumulation of Pure Aluminum

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Behzad Pasoodeh,
  • Vali Alimirzaloo,
  • Mehrdad Shahbaz,
  • Kaveh Hajizadeh,
  • Javad Alizadeh Kaklar

摘要

New cyclic extrusion compression angular pressing (CECAP) is a new approach to severe plastic deformation (SPD) to improve the mechanical properties of metals. Moreover, the studies showed that the plastic flow on New CECAP process has not been investigated yet. Thus, here, FEM was used to investigate the deformation flow, damage, mean stress and strain distribution. The flow net for various corner radius of equal channel angular pressing (ECAP) zone, and the longitudinal distance of ECAP and exit extrusion zones, were considered. It was found that for the radius of 5 mm in the zone after ECAP, the upper elements of the sample move quickly compared to lower elements. However, for higher corner radius of 10 mm, the condition is different. The variations of the damage and mean stress during deformation for two points (A and B) along the longitudinal section showed that for both points, at the first stage, there is steady downward trend until about − 190 MPa. To investigate the accuracy of the model, the experimental samples were used to study the material flow on this process. Moreover, the comparison between hardness and effective strain showed that the distribution patterns have considerable similarities.