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<p>To meet the demand for high-strength and high-performance tubes in modern industry, this paper proposes an axial compression electromagnetic bulging (ACEB) process, which is based on the traditional electromagnetic bulging (TEB) by adding a booster coil, driving plate, and driving steel block at the tube end. The study compares the macroscopic plastic deformation, fracture morphology, grain structure, and dislocation distribution of tubes produced by TEB and ACEB. Simulation results show that the axial electromagnetic force generated by the booster coil, transmitted through the driving plate and steel block, enhances axial material flow at the tube end. Under ACEB, the tubes exhibit microporous ductile fractures with stronger plastic deformation, compared to TEB's mixed brittle-ductile fractures. ACEB induces significant recrystallization at the tube end (19.90%) due to severe collisions, high-speed deformation, and poor heat dissipation. Both processes increase dislocation density, but the dislocation distribution in the ACEB process is more uniform, enhancing plasticity.</p>

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Effect of Axial Magnetic Force on Formability and Microstructure of 5052 Aluminum Alloy Tube

  • 期刊论文

  • 发表日期：

    2025年10月18日

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  • Jinxiu Fang,
  • Quanguang Zhao,
  • Liuming Sun,
  • Xu Huang,
  • Zhenyi Huang

摘要

To meet the demand for high-strength and high-performance tubes in modern industry, this paper proposes an axial compression electromagnetic bulging (ACEB) process, which is based on the traditional electromagnetic bulging (TEB) by adding a booster coil, driving plate, and driving steel block at the tube end. The study compares the macroscopic plastic deformation, fracture morphology, grain structure, and dislocation distribution of tubes produced by TEB and ACEB. Simulation results show that the axial electromagnetic force generated by the booster coil, transmitted through the driving plate and steel block, enhances axial material flow at the tube end. Under ACEB, the tubes exhibit microporous ductile fractures with stronger plastic deformation, compared to TEB's mixed brittle-ductile fractures. ACEB induces significant recrystallization at the tube end (19.90%) due to severe collisions, high-speed deformation, and poor heat dissipation. Both processes increase dislocation density, but the dislocation distribution in the ACEB process is more uniform, enhancing plasticity.