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The yield strength of a material going through grain size reduction increases by a factor, k multiplied by:(where d is the diameter of grain)

The yield strength of a material going through grain size reduction increases by a factor, k multiplied by:(where d is the diameter of grain) Correct Answer d-1/2

Yield strength relation is given by Hall-Petch relation in which final yield strength is equal to initial yield strength plus k( a constant) multiplied by d-1/2.

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