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<p>In this paper, the forming properties of 5052-O aluminum alloy sheet were investigated using experimental methods and CPFEM numerical simulation. To explore the microstructural evolution and formability of the 5052-O aluminum alloy under multiaxial stress conditions, Erichsen cupping tests were performed on sheet specimens, from which samples with varying punch strokes (PS) were collected. These samples were categorized into distinct regions based on the extent of deformation and analyzed separately. The strain energy per unit volume and the relative slip distance <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({\lambda }_{i}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>λ</mi> <mi>i</mi> </msub> </math></EquationSource> </InlineEquation> were found to be significantly higher in regions subjected to multiaxial stress. An increase in <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\({\lambda }_{i}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>λ</mi> <mi>i</mi> </msub> </math></EquationSource> </InlineEquation> resulted in a substantial accumulation of dislocations, thereby enhancing the material’s work-hardening capacity. During plastic deformation progressed, the grain orientation changed significantly. R-type texture and Brass texture remained consistently present throughout the deformation process. Under large multiaxial stresses, grain morphology aligned with the macroscopic deformation of the sheet. Multi-system slip occurred within grains, and interactions between adjacent grains induced grain rotation. A multi-scale modeling approach was employed to investigate the material’s deformation behavior. By integrating macroscopic modeling with CPFEM modeling, the numerical results showed good agreement with the experimental observations.</p>

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Deformation Behavior and Microstructure Evolution of 5052-O Aluminum Alloy Under Multiaxial Stress During Erichsen Cupping Test

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Guanghui Zhao,
  • Mingyang Liu,
  • Juan Li,
  • Huaying Li,
  • Yugui Li,
  • Yaohui Song

摘要

In this paper, the forming properties of 5052-O aluminum alloy sheet were investigated using experimental methods and CPFEM numerical simulation. To explore the microstructural evolution and formability of the 5052-O aluminum alloy under multiaxial stress conditions, Erichsen cupping tests were performed on sheet specimens, from which samples with varying punch strokes (PS) were collected. These samples were categorized into distinct regions based on the extent of deformation and analyzed separately. The strain energy per unit volume and the relative slip distance \({\lambda }_{i}\) λ i were found to be significantly higher in regions subjected to multiaxial stress. An increase in \({\lambda }_{i}\) λ i resulted in a substantial accumulation of dislocations, thereby enhancing the material’s work-hardening capacity. During plastic deformation progressed, the grain orientation changed significantly. R-type texture and Brass texture remained consistently present throughout the deformation process. Under large multiaxial stresses, grain morphology aligned with the macroscopic deformation of the sheet. Multi-system slip occurred within grains, and interactions between adjacent grains induced grain rotation. A multi-scale modeling approach was employed to investigate the material’s deformation behavior. By integrating macroscopic modeling with CPFEM modeling, the numerical results showed good agreement with the experimental observations.