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A material with grain size of ASTM No.6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/$${m^{\frac{3}{2}}}$$
Grain size of the material is approximately

A material with grain size of ASTM No.6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/$${m^{\frac{3}{2}}}$$
Grain size of the material is approximately Correct Answer 45 μm

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