Phase Diagrams - Ideal equilibrium cooling curve for a...

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Phase Diagrams Lab 2 Phase Diagrams
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Why are they useful? State of the system at given conditions? Shows all phases? Equilibrium? Tendency towards the system!
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How are they determined? Theoretically? Thermal analysis Direct observation Dip sampling Fracture at liquation Dilatometry Metallography X-ray Electrical resistance
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Some not so good techniques Direct observation Good for demos Hard to detect Dip sampling Messy? Dangerous Difficult Fracture at liquation Eutectics and solidus points
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Dilatometry
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Metallography
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Electrical resistivity
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Thermal analysis
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Unformatted text preview: Ideal equilibrium cooling curve for a material with no phase change versus one with a phase change Thermal analysis Non-equilibrium cooling and heating curves for a pure material with a phase transformation. Thermal analysis Solid solution phase diagram with idealized cooling curve. Thermal analysis We will extrapolate to determine transformation temperatures Sn-Bi system Future labs Save your pennies, and separate pre-1982 and post-1982 Start to think about your design project. Details to follow...
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This note was uploaded on 11/16/2011 for the course EMA 3013C taught by Professor Bourne during the Spring '10 term at University of Florida.

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Phase Diagrams - Ideal equilibrium cooling curve for a...

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