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Unformatted text preview: temperature T, under two conditions: (1) the solid has uniform temperature, T; (2) the solid has a temperature gradient, and T is an intermediate temperature. Would the two measurements differ? How and why? Problem 4: A binary system of atoms A and B has the phase diagram drawn below. (a) For given T and x, three pieces of information can be read from any phase diagram: (1) the phases present, (2) the compositions of the phases present, and (3) the fractions of the phases present. Briefly explain how this is done. (b) Only the one-phase fields are shown in the phase diagram above. Outline and label the two-phase fields. (c) Assume the composition indicated by the arrow, and describe how the system evolves if it is cooled from the liquid phase field to the lowest temperature on the plot slowly enough that equilibrium is always preserved. Page 1 Engineering 45: Fall, 1993 Midterm Exam ’ Page 2...
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- Spring '07
- Atom, Crystal