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<p>To synergistically enhance the strength and ductility of 1060 aluminium alloy, this study developed a constrained groove pressing (CGP) -rolling-annealing combined process and investigated its influence on material properties and microstructure. The results indicated that the CGP process introduced high-density dislocations (up to 2.0 × 10¹³ m⁻²) and deformation texture, laying the foundation for strength improvement. The rolling process optimized dislocation distribution through plane strain and refined the grain structure (average grain size: 13.08 ± 0.6&#xa0;μm), achieving a peak tensile strength of 123 ± 2.9&#xa0;MPa. Annealing facilitated the directional recovery of Cube texture (increased from 10.3% to 21.5%), achieving dislocation extinction (dislocation density reduced to 9.0 × 10¹² m⁻²) and plasticity recovery (elongation of 29 ± 1.4%). Formability tests demonstrated that materials processed via the CGP-rolling-annealing composite technique yielded satisfactory cylindrical components under a 5 kN blank-holding force, exhibiting significantly higher strength than in the as-received state. These findings confirmed that the CGP-rolling-annealing combined process overcame limitations inherent in conventional single-step techniques, offering a novel pathway to enhance the performance of low-strength aluminium alloys.</p>

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Study on the formability of 1060 aluminium alloy processed by the CGP-rolling-annealing combined process

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Xianli Zheng,
  • Zhiqiang Zhang,
  • Mingwen Ren,
  • Hongjie Jia

摘要

To synergistically enhance the strength and ductility of 1060 aluminium alloy, this study developed a constrained groove pressing (CGP) -rolling-annealing combined process and investigated its influence on material properties and microstructure. The results indicated that the CGP process introduced high-density dislocations (up to 2.0 × 10¹³ m⁻²) and deformation texture, laying the foundation for strength improvement. The rolling process optimized dislocation distribution through plane strain and refined the grain structure (average grain size: 13.08 ± 0.6 μm), achieving a peak tensile strength of 123 ± 2.9 MPa. Annealing facilitated the directional recovery of Cube texture (increased from 10.3% to 21.5%), achieving dislocation extinction (dislocation density reduced to 9.0 × 10¹² m⁻²) and plasticity recovery (elongation of 29 ± 1.4%). Formability tests demonstrated that materials processed via the CGP-rolling-annealing composite technique yielded satisfactory cylindrical components under a 5 kN blank-holding force, exhibiting significantly higher strength than in the as-received state. These findings confirmed that the CGP-rolling-annealing combined process overcame limitations inherent in conventional single-step techniques, offering a novel pathway to enhance the performance of low-strength aluminium alloys.