Hot working parameters and mechanisms in as-cast Mg-3Sn-1Ca alloy

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  • Y. V.R.K. Prasad
  • K. P. Rao
  • N. Hort
  • K. U. Kainer

The hot working characteristics of as-cast Mg-3Sn-1Ca alloy have been studied using processing-map technique and the kinetic rate equation. The map exhibited two domains; one in the lower strain rate range (0.0003-0.01 s- 1) and the other in the higher strain rate range (0.1-10 s- 1)-both falling in the same temperature range of 350-550 s- 1. Hot extrusion at 500 °C and a speed corresponding to an average strain rate of 3 s- 1 exhibited dynamically recrystallized microstructure. The estimated apparent activation energy values are higher than those for self-diffusion in pure magnesium suggesting that the large volume fraction of MgSnCa intermetallic particles causes significant back stress.

Original languageEnglish
JournalMaterials Letters
Issue number26
Pages (from-to)4207-4209
Number of pages3
Publication statusPublished - 15.10.2008
Externally publishedYes

    Research areas

  • Dynamic recrystallization, Hot working, Kinetics, Magnesium alloys, Processing map
  • Engineering