1. A & B are completely soluble in both liquid and solid states; melting point of...
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1. A & B are completely soluble in both liquid and solid states; melting point of A and B are 1800 °C and 1450 °C respectively. An alloy containing 40 % B starts to solidify at 1710 °C by separating crystals of 15 % B. an alloy containing 70 % B starts to solidify at 1550 °C by separating crystals of 37 % B. - Construct the phase diagram. - For an alloy containing 70 % B: A- Give the temperature of initial and final solidification. C- Draw the cooling curve B- Give the chemical composition and the amounts of the phases present at 1500°C 2- Cu and Ag are completely soluble in each other in liquid state. They form an eutectic mixture at 70 % Ag. The eutectic reaction occurs at 780 °C. The melting points of Cu and Ag are 1080 ° Cand 960 °C respectively. The max solubility of Ag in Cu is 8 % and that of Cu in Ag is 9 %. The solid solubility is decreased with temperature to be zero at room temperature. - Construct the equilibrium phase diagram. - Make phase analysis of 70 % Cu – 30 % Ag alloy at 1000 ° C, and at 600 C. 3- Consider the binary eutectic Copper-Silver phase diagram in problem number 2; make phase analysis of alloy 75 wt. % Cu at the following temperatures: 1000 °C, 800 °C, and 780 °C, and also sketch the microstructures. 1. A & B are completely soluble in both liquid and solid states; melting point of A and B are 1800 °C and 1450 °C respectively. An alloy containing 40 % B starts to solidify at 1710 °C by separating crystals of 15 % B. an alloy containing 70 % B starts to solidify at 1550 °C by separating crystals of 37 % B. - Construct the phase diagram. - For an alloy containing 70 % B: A- Give the temperature of initial and final solidification. C- Draw the cooling curve B- Give the chemical composition and the amounts of the phases present at 1500°C 2- Cu and Ag are completely soluble in each other in liquid state. They form an eutectic mixture at 70 % Ag. The eutectic reaction occurs at 780 °C. The melting points of Cu and Ag are 1080 ° Cand 960 °C respectively. The max solubility of Ag in Cu is 8 % and that of Cu in Ag is 9 %. The solid solubility is decreased with temperature to be zero at room temperature. - Construct the equilibrium phase diagram. - Make phase analysis of 70 % Cu – 30 % Ag alloy at 1000 ° C, and at 600 C. 3- Consider the binary eutectic Copper-Silver phase diagram in problem number 2; make phase analysis of alloy 75 wt. % Cu at the following temperatures: 1000 °C, 800 °C, and 780 °C, and also sketch the microstructures.
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Materials Science and Engineering An Introduction
ISBN: 978-0470419977
8th edition
Authors: William D. Callister Jr., David G. Rethwisch
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