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1018 Annealed

  1. Apr 6, 2007 #1
  2. jcsd
  3. Apr 6, 2007 #2
    Hi, steel 1018 usually has between 0.15-0.20 % of Carbone, yes, the darker regions are perlite
  4. Oct 6, 2008 #3
    Sure, dark structure is Perlite.
    Carbon fraction is given in alloy specification

    1018 [tex]\rightarrow[/tex] 0.18% Carbon

    And ... Annealing Treatment ( Total Annealing) may result in perlite + ferrite.
    It's shown in your micrograph
    Dark - perlite
    Bright - Ferrite
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