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Forging of Mg–3Sn–2Ca–0.4Al Alloy Assisted by Its Processing Map and Validation Through Analytical Modeling

  • K. P. RaoEmail author
  • K. Suresh
  • Y. V. R. K. Prasad
  • C. Dharmendra
  • N. Hort
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The processing map for hot working of cast Mg3Sn2Ca0.4Al (TXA320) alloy has been validated using forging experiments to form a ribweb (cup) shaped component. Finite-element (FE) simulation has also been conducted to obtain the strain and strain rate variations in the components as well as the loadstroke curves. TXA320 has been successfully forged under optimum processing conditions (450 °C at press speeds of 1 and 0.1 mm s−1) predicted by the processing map, where dynamic recrystallization (DRX) occurs. The microstructure obtained on these components revealed fully DRX grains and the average grain size has increased with increase in temperature. The loadstroke curves predicted by FE simulation of the forging process correlate well with experimental curves, although the simulated curves are slightly lower. Forging done in the flow instability regime of the processing map resulted in specimen fracture and the microstructure exhibited cracks at flow localization bands.

Keywords

Mg alloy Processing map Forging Process simulation 

Notes

Acknowledgements

This work was fully supported by a research grant (project #115108) from the Research Grants Council of the Hong Kong Special Administrative Region, China.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • K. P. Rao
    • 1
    Email author
  • K. Suresh
    • 2
  • Y. V. R. K. Prasad
    • 3
  • C. Dharmendra
    • 4
  • N. Hort
    • 5
  1. 1.Department of Mechanical and Biomedical EngineeringCity University of Hong KongKowloonHong Kong
  2. 2.Department of PhysicsBharathiar UniversityCoimbatoreIndia
  3. 3.Processingmaps.ComBengaluruIndia
  4. 4.Department of Mechanical EngineeringUniversity of New BrunswickFrederictonCanada
  5. 5.Magnesium Innovation Centre, Helmholtz-Zentrum GeesthachtGeesthachtGermany

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