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Maximum thermal cycle range to avoid onset of plasticity

  1. Feb 10, 2013 #1
    1. The problem statement, all variables and given/known data
    The linear thermal expansion coefficient of aluminum is 22.2x10-6 m/m K and that of alumina is 5.4x10-6 m/m K. If the criterion for onset of dislocation plasticity is related to thermal mismatch exceeding Burgers vector for aluminum, which is 2.8x10-10 m. What is the maximum thermal cycle range to avoid onset of plasticity?

    3. The attempt at a solution
    Frankly I find the wording of the question confusing, hoping you guys could shed some light.
  2. jcsd
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