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3. Coble Creep vs. N-H Creep A rough but convenient summary of different diffusion parameters is given by D. =0.5 exp(-1
Posted: Mon May 09, 2022 10:07 am
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- 3 Coble Creep Vs N H Creep A Rough But Convenient Summary Of Different Diffusion Parameters Is Given By D 0 5 Exp 1 1 (17.18 KiB) Viewed 30 times
3. Coble Creep vs. N-H Creep A rough but convenient summary of different diffusion parameters is given by D. =0.5 exp(-171./1) (cm/5) 3D: =1.5x10*exp(-8.97/T) (cm/5) (1) If the homologous temperature is 0.5, estimate the critical grain size de below which Coble creep will dominate. (2) What is the lattice diffusion activation energy Oz for a material with the melting temperature T.= 1000K? What if In = 1500K? (3) What is the grain boundary diffusion activation energy Ocg for a material with the melting temperature Im = 1000K? What if Im = 1500K?