Recent content by cperez

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    Solving for Hall Petch Unknowns

    I don't believe so.
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    Solving for Hall Petch Unknowns

    It's an engineering material science class problem. The two equations are in MPa and mm.. so I think σy is in MPa/mm
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    Solving for Hall Petch Unknowns

    The lower yield point for an iron that has an average grain diameter of 5x10^-2mm is 135 MPa. At a grain diameter of 8x10^-3, the yield point increases to 260 MPa. At what grain diameter will the lower yield point be 205 MPa? Homework Equations Hall-Petch Equation: σy = σo + ky(d^-(1/2)) The...