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Unformatted text preview: 7. Ductile brittle transition temperature is observed in a. hcp metals b. fcc metals c. bcc metals and alloys (c ) 8. Copper sample is heavily rolled. Its melting point is 1080oC. The recrystallization is expected to be a. below 200oC b. between 350 and 400oC c.above500oC (b ) 9.Advanatge of hot working is a. increase in strength b. preferred orientation of grains c. large reductions in cross-section (c ) 10. Changes in properties are slow during grain growth because a. grain size changes rapidly b. grain size does not change c. grain size increases very slowly with time (c ) 11. Bonus question: You designing a light weight bicycle for mountain rides. Choose the material that you will use. a. alloy steel b. aluminum alloy c. ceramic (alumina) (b )...
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- Spring '08