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      Effect of manganese on grain refinement of Mg–Al based alloys

      Cao, Peng; Qian, Ma; StJohn, David H.
      DOI
       10.1016/j.scriptamat.2006.02.020
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      Cao, P., Qian, M. & StJohn, D. H. (2006). Effect of manganese on grain refinement of Mg–Al based alloys. Scripta Materialia, 54(11), 1853- 1858.
      Permanent Research Commons link: https://hdl.handle.net/10289/1407
      Abstract
      Manganese is a grain refiner for high purity Mg–3%Al, Mg–6%Al, Mg–9%Al, and commercial AZ31 (Mg–3%Al–1%Zn) alloys when introduced in the form of an Al–60%Mn master alloy splatter but the use of pure Mn flakes and ALTAB™ Mn75 tablets shows no grain refinement. Long time holding of the melt at 730 °C leads to an increase in grain size. The mechanism is attributed to the presence of an ε-AlMn phase (hexagonal close-packed) in the master alloy splatter.
      Date
      2006-06
      Type
      Journal Article
      Publisher
      Elsevier
      Collections
      • Science and Engineering Papers [3219]
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