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Help with continuous cooling diagrams

  1. Apr 24, 2009 #1
    I have the answers to these, but I have a question about them.
    1.jpg
    2.jpg
    The answers to 1 are P,P,M+P,M , and the answers to 2 are F+P,A+B+F+M+P,A+B+F+M,A+B+M,A+M .

    My question is, how come some of the answers to 2 have austenite, while none of the answers to 1 do? I don't see a Mfinish line anywhere, so how do we know that all the austenite is gone?

    Sorry if this is really obvious. There's a reason I'm not in MatE, and stuff like this is it.
     
  2. jcsd
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