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<p>A strong cube texture leads to poor formability in aluminium alloy sheets; this can be improved by reducing the cube texture and developing shear texture components. In this study, aluminium alloy AA6061 was subjected to groove pressing and flattening in multiple passes. The plastic shear strain accumulated in the sheet during groove pressing was determined using finite element analysis and the bulk texture was determined with X-ray diffraction. In the solutionized sample, the volume fraction of the cube texture was 28.3% in the subsurface layer and 27.6% in the mid layer. After six passes of groove pressing, the cube volume fraction was reduced to 15.5% in the subsurface layer and 16.5% in the mid layer. The cube volume fraction decreased with increasing number of groove pressing and flattening passes; this reduction in the cube texture volume fraction correlated with an increase in the level of shear strain.</p>

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Role of Shear Strain in the Groove Pressing Process in Influencing Texture Evolution for Improving Formability in an Aluminium Alloy

  • 期刊论文

  • 发表日期：

    2025年5月17日

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  • Iyappan Murugesan,
  • Uday Chakkingal,
  • Matthias Weiss

摘要

A strong cube texture leads to poor formability in aluminium alloy sheets; this can be improved by reducing the cube texture and developing shear texture components. In this study, aluminium alloy AA6061 was subjected to groove pressing and flattening in multiple passes. The plastic shear strain accumulated in the sheet during groove pressing was determined using finite element analysis and the bulk texture was determined with X-ray diffraction. In the solutionized sample, the volume fraction of the cube texture was 28.3% in the subsurface layer and 27.6% in the mid layer. After six passes of groove pressing, the cube volume fraction was reduced to 15.5% in the subsurface layer and 16.5% in the mid layer. The cube volume fraction decreased with increasing number of groove pressing and flattening passes; this reduction in the cube texture volume fraction correlated with an increase in the level of shear strain.