Qioz9 - • Question 2 2 out of 2 points What is the phase fraction of ferrite in the pearlite microstructure Answer Selected Answer ~ 89 Correct

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Question 1 2 out of 2 points Which of the following carbon concentrations could lead to the microstructure depicted below (at equilibrium)? Answer Selected Answer: 0.85 wt% C Correct Answer: 0.85 wt% C Response Feedback: Correct. This is an equilibrium hypereutectoid microstructure with proeutectoid cementite. Such a microstructure is only possible for compositions between 0.76 wt% C and 2.11 wt% C.
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Unformatted text preview: • Question 2 2 out of 2 points What is the phase fraction of ferrite in the pearlite microstructure? Answer Selected Answer: ~ 89% Correct Answer: ~ 89% Response Feedback: Correct, All pearlite (ferrite + cementite) is derived from 0.76 wt% austenite at equilibrium. Thus the phase fraction that is ferrite can be obtained from the inverse lever rule....
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This document was uploaded on 10/26/2011 for the course ENGL 250 at Iowa State.

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Qioz9 - • Question 2 2 out of 2 points What is the phase fraction of ferrite in the pearlite microstructure Answer Selected Answer ~ 89 Correct

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