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Unformatted text preview: • Altering T can change the number of phases Components and Phases • Components – the elements or compounds which are present in the allow • Phases – the physically and chemically distinct material regions that form Criteria for Solid Solubility • Simple system o both have the same crystal structure and have similar electronegativities and atomic radii (W. Hume-Rothery rules) suggesting high mutual solubility o Ni and Cu are totally soluble in one another for all proportions The Lever Rule • Tie line – connects the phases in equilibrium with each other -> also sometimes called an isotherm Binary Eutectic Systems • Eutectic – liquid transforms to two solid phases • Eutectoid – one solid phase transforms to two other solid phases • Peritectic – liquid and one solid phase transform to a second solid phase...
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- Fall '10
- Solubility, Solid solution, single phase, Binary Eutectic Systems