Based on the Cu?Zn phase diagram shown in Fig. 11.23, and reproduced below, give the microstructure of three copper?zinc alloys containing (i) 30 at. %, (ii) 35 at. %, and (iii) 50 at. % Zn at:
(a) 800°C
(b) 500°C
(c) 25°C
Assuming that the alloys were solidified by equilibrium cooling, give the phases and constituents.
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? Identify and state the historical significance of Mary Elizabeth Lease.
What will be an ideal response?
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What will be an ideal response?
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