Effect of grain size on the tensile deformation of wrought Mg-MM-Al-Zn-Sn alloy

Hyun Kyu Lim, Do Hyung Kim, Ju Youn Lee, Won Tae Kim, Do Hyang Kim

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The effect of grain size on the tensile deformation of Mg-MM-Al-Zn-Sn (EAZT211) alloy sheet has been investigated. Specimens with grain size varying from ~ 10 to ~ 20 μm have been obtained by altering the annealing conditions after rolling. The yield strength of EAZT211 sheet exhibits grain size dependence according to Hall-Petch relationship from room temperature to 200 °C. Occurrence of yield phenomenon and decrease of Hall-Petch slope (k) with increasing strain suggest that non-basal slip system operates during deformation. In addition, deformation mechanism changes from slip mechanism to grain boundary sliding mechanism at ~ 150 °C.

Original languageEnglish
Pages (from-to)2271-2274
Number of pages4
JournalMaterials Letters
Issue number15
Publication statusPublished - 2008 May 31


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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