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10. In Fe-C alloys that have been heated to form 100% austenite, which of the following is created by a rapid quench? Select one: a. pearlite b. martensite c. ferrite d. bainite 11. What is the weight fraction of graphite in a 3.5 wt % C cast iron? Assume all carbon exists as the graphite phase 12. Gray iron is weak and brittle in tension because a. The graphite nodules impede dislocation motion b. The pearlite matrix enhances ductility c. the tips of the graphite flakes act as stress concentrators

10. In Fe-C alloys that have been heated to form 100% austenite, which of the following is created by a rapid quench? Select one: a. pearlite b. martensite c. ferrite d. bainite 11. What is the weight fraction of graphite in a 3.5 wt % C cast iron? Assume all carbon exists as the graphite phase 12. Gray iron is weak and brittle in tension because a. The graphite nodules impede dislocation motion b. The pearlite matrix enhances ductility c. the tips of the graphite flakes act as stress concentrators

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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10. In Fe-C alloys that have been heated to form 100% austenite, which of the following is created by a rapid quench? Select one: a. pearlite b. martensite c. ferrite d. bainite 11. What is the weight fraction of graphite in a 3.5 wt % C cast iron? Assume all carbon exists as the graphite phase 12. Gray iron is weak and brittle in tension because a. The graphite nodules impede dislocation motion b. The pearlite matrix enhances ductility c. the tips of the graphite flakes act as stress concentrators
Transcribed Image Text:10. In Fe-C alloys that have been heated to form 100% austenite, which of the following is created by a rapid quench? Select one: a. pearlite b. martensite c. ferrite d. bainite 11. What is the weight fraction of graphite in a 3.5 wt % C cast iron? Assume all carbon exists as the graphite phase 12. Gray iron is weak and brittle in tension because a. The graphite nodules impede dislocation motion b. The pearlite matrix enhances ductility c. the tips of the graphite flakes act as stress concentrators
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