Given below is a phase diagram of a hypothetical A-B system with eutectic (L a +...
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Given below is a phase diagram of a hypothetical A-B system with eutectic (L→ a + B). At temperature T₁, B is practically insoluable in A, whereas B can dissolve 10 atom% A. A diffusion couple is made by welding pure A and pure B, and then is annealed at T₁. a) Show by a series of sketches of C vs. x, how the concentration profiles and o/ß interface will move vary with time (minimum of four sketches including to = 0, 0 <t₁ <t₂ <∞, and to = ∞0). b) If the overall composition of the entire couple is 50 atom% B, what will be the maximum displacement of the a/ß interface (Assume that a and 3 phases have equal molar volume). a B T₁ A B Given below is a phase diagram of a hypothetical A-B system with eutectic (L→ a + B). At temperature T₁, B is practically insoluable in A, whereas B can dissolve 10 atom% A. A diffusion couple is made by welding pure A and pure B, and then is annealed at T₁. a) Show by a series of sketches of C vs. x, how the concentration profiles and o/ß interface will move vary with time (minimum of four sketches including to = 0, 0 <t₁ <t₂ <∞, and to = ∞0). b) If the overall composition of the entire couple is 50 atom% B, what will be the maximum displacement of the a/ß interface (Assume that a and 3 phases have equal molar volume). a B T₁ A B
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Related Book For
Statistics for Business & Economics
ISBN: 978-1285846323
12th edition
Authors: David Anderson, Dennis Sweeney, Thomas Williams, Jeffrey Camm, James Cochran
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