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Bulging limit of AZ31B magnesium alloy tubes in hydroforming with internal and external pressure

  • Xianchang Mao
  • Youping YiEmail author
  • Shiquan Huang
  • Hailin He
ORIGINAL ARTICLE
  • 56 Downloads

Abstract

The bulging process of AZ31B magnesium alloy tubes in hydroforming with internal and external pressure (THFIEP) was simulated using the commercial finite element software Dynaform and considering plasticity theory and the yield criterion. The investigations focused on the influence of the processing parameters (the corner radius of the tool (r), the taper angle of the conical core (φ), the length of the bulging zone (l), the axial supplement of the tubes (s), the internal pressure (Pi), and the external pressure (Po)) on the maximum bulging diameter (dmax). The results showed that the dmax increased significantly with increasing r when r was less than 3 mm, and dmax remained stable with increasing r when r was larger than 3 mm. The influences of φ, l, s, Pi, and Po on the dmax were similar; the dmax first increased then decreased with increasing values of these parameters. The optimum bulging processing parameters were determined, r was 5 mm, φ was 12°, s was 10 mm, l was 37.5 mm, Pi was 34 MPa, Po was 17 MPa, and the obtained optimum dmax was 40.43 mm.

Keywords

Magnesium alloy Tubes Processing parameters Numerical simulation Maximum bulging diameter 

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Notes

Funding information

The authors received financial support from the National Natural Science Foundation of China (Grant no. 51505504) and the Science Research Foundation of Guangxi Educational Department (Grant no. KY2016YB456).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • Xianchang Mao
    • 1
    • 2
    • 3
  • Youping Yi
    • 1
    • 3
    Email author
  • Shiquan Huang
    • 1
    • 3
  • Hailin He
    • 1
    • 3
  1. 1.College of Mechanical and Electrical EngineeringCentral South UniversityChangshaChina
  2. 2.School of Mechanical & Electric EngineeringHezhou UniversityHezhouChina
  3. 3.State Key Laboratory of High Performance Complex ManufacturingChangshaChina

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