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Question: please help i cant find solutions subject about engineering materials...

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PLEASE HELP!!!! I CANT FIND SOLUTIONS!!! Subject about Engineering Materials (Superplastic deformation mechanism)

QUESTION: Prove theoretically that a higher m value can produce extensive plastic formation.

'm' is the strain rate sensitivity coefficient.

(5 marks)

Where, Strain rate A Dimensionless constant D-Diffusion coefficient (D- D. e p (-Q/RT)) D = Constant, = Activation energy, R = Gas constant, T = Temperature σ Stress G Shear modulus Burgers vector d- Grain size k Boltzmanns constant p, m Constant

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