Question: Q8 need help with entire question Material Strengthening Assuming the Hall-Petch equation is valid and all strengthening is due to grain size changes. During a

Q8 need help with entire question

Q8 need help with entire question Material Strengthening Assuming the Hall-Petch equation

Material Strengthening Assuming the Hall-Petch equation is valid and all strengthening is due to grain size changes. During a strengthening process of copper zinc alloy, the following set of data is recorded Grain Diameter (mm) Yield Strength (MPa) 0.015 152 0.035 117 (3 marks) Determine the constants,00 and K, in the Hall Petch equations (1 marks) Determine the grain size needed to achieve a yield strength of 175 MPa Show your working along with the unit for each parameter

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