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Super-formable pure magnesium at room temperature.

Zhuoran Zeng1, Jian-Feng Nie2, Shi-Wei Xu3

  • 1Department of Materials Science and Engineering, Monash University, Melbourne, Vic, 3800, Australia.

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|October 19, 2017
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Magnesium can now be super-formable at room temperature without alloying. This breakthrough enables significant cold rolling and forming of magnesium without cracking, paving the way for lighter vehicles.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Metallurgy

Background:

  • Magnesium's hexagonal structure and texture limit room temperature formability.
  • Alloying offers limited formability improvements without altering deformation modes.

Purpose of the Study:

  • To demonstrate super-formability of magnesium at room temperature without alloying.
  • To overcome limitations in shaping magnesium for applications like automotive parts.

Main Methods:

  • Cold rolling textured magnesium to high strain levels.
  • Achieving significant grain size reduction to the micron order.

Main Results:

  • Magnesium achieved super-formability at room temperature without alloying.
  • Cold rolling to strains eight times greater than conventional processing was successful.
  • Inter-granular mechanisms dominated over slip and twinning, preventing cracking.

Conclusions:

  • A novel pathway for developing highly formable magnesium products.
  • Enables the use of magnesium in applications traditionally limited by formability.
  • Potential for reduced emissions through replacing heavier metals in vehicles.