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<p>In order to study the effect of process parameters on post-forming property of aluminum alloy, Gleeble tensile test was used to simulate the warm forming of 6016 aluminum alloy sheet. The heating process parameters affecting the mechanical properties of the specimens were evaluated and optimized by response surface modeling and multi-objective optimization based on NSGA-II. The formability and fracture failure of aluminum alloy floor under warm stamping were predicted by simulation and verified by forming experiments. The experimental results show that the floor is heated at 270 °C and held for 12&#xa0;min to obtain good mechanical properties. The tensile strength reaches 283&#xa0;MPa, the yield strength reaches 220&#xa0;MPa, and the elongation reaches 21%. Compared with the original material, the tensile strength and yield strength are increased by 14.7% and 56.6%, respectively, and the elongation is reduced by 46.9%. The difference from Gleeble test was 1.6%, 2.3% and 12.3%, respectively. When the friction coefficient reaches 0.3 and the forming temperature is lower than 240&#xa0;°C, the floor will crack, which is consistent with the simulation prediction results.</p>

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Multi-objective Optimization and Simulation of Warm Stamping Process of 6016 Aluminum Alloy Automobile Floor

  • 期刊论文

  • 发表日期：

    2025年1月22日

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  • Yiwei Zhao,
  • Huijun Zhao,
  • Zhiyi Ding,
  • Jianghua Huang

摘要

In order to study the effect of process parameters on post-forming property of aluminum alloy, Gleeble tensile test was used to simulate the warm forming of 6016 aluminum alloy sheet. The heating process parameters affecting the mechanical properties of the specimens were evaluated and optimized by response surface modeling and multi-objective optimization based on NSGA-II. The formability and fracture failure of aluminum alloy floor under warm stamping were predicted by simulation and verified by forming experiments. The experimental results show that the floor is heated at 270 °C and held for 12 min to obtain good mechanical properties. The tensile strength reaches 283 MPa, the yield strength reaches 220 MPa, and the elongation reaches 21%. Compared with the original material, the tensile strength and yield strength are increased by 14.7% and 56.6%, respectively, and the elongation is reduced by 46.9%. The difference from Gleeble test was 1.6%, 2.3% and 12.3%, respectively. When the friction coefficient reaches 0.3 and the forming temperature is lower than 240 °C, the floor will crack, which is consistent with the simulation prediction results.