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1. |
A 34.6% Pb-Sn alloy is cooled just below the eutectic temperature (183°C). What is the fraction of proeutectic α and eutectic mixture (α+β)? |
A. | 70% and 30% |
B. | 64% and 36% |
C. | 36% and 64% |
D. | 30% and 70% |
Answer» C. 36% and 64% | |