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Unformatted text preview: a. stage III creep b. stage II creep c. stage I creep (b ) 7. Activation energy for creep behavior of a metal is a. activation energy for self diffusion b. activation energy for grain boundary diffusion c. activation energy for interstitial diffusion (a ) 8. Fracture toughness test of a material is conducted in a. plane strain tension b. plane stress tension c. plane strain compression (a ) 9. Major changes in properties take place during a. recovery b. recrystallization c. grain growth ( b) 10. At the end of very large cold work, the material is a. isotropic with elongated grains b. anisotropic with elongated grains c. isotropic with equiaxial grains (b ) 11. Bonus question. The time I spend on the lecture part of the course (not including Lab )every day on the average i...
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- Spring '08
- Materials Science, diffusion b. activation, diffusion c. activation