10-23-Lecture

10-23-Lecture - DIAGRAMS ENGR 213 PHASE DIAGRAMS FOR METALS...

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DIAGRAMS ENGR 213
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PHASE DIAGRAMS FOR METALS phases present for given Composition T @ equilibrium development of microstructure
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DEFINITIONS component: pure metal, compounds in alloys system: series of alloys w/ same components phase: homogeneous part of system w/ uniform physical & chemical characteristics Microstructure No of phases present Proportions distribution
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BINARY SYSTEMS isomorphous complete liquid and solid solubility of components e.g., Cu-Ni eutectic limited solubility e.g., Pb-Sn Phase diagrams show phase vs T and C liquidus line solidus line melting temp temp composition
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ISO Binary Phase Diagrams - 1 Gives phases present Compositions Amounts Compositions one phase case two phase case one liquid C L one solid C α
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ISO Binary Phase Diagrams - 2 Amounts of each phase Single phase case Two phase case lever rule mass fractions W L = S/(R+S) W α = R/(R+S) volume fractions Eqs 10.6 in book
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This note was uploaded on 03/26/2008 for the course ENGR 213 taught by Professor Dr.stubbs during the Fall '04 term at Texas A&M.

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10-23-Lecture - DIAGRAMS ENGR 213 PHASE DIAGRAMS FOR METALS...

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