Term
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Definition
| a phase diagram for a system with two components |
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Term
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Definition
| strengthening, typically used in metallic materials, by the formation of ultra-fine dispersions of a second phase. the interface between the newly formed phase and the parent phase provides additional resistance to dislocation motion, thereby causing strengthening of metallic materials. |
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Term
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Definition
| the temperature difference between the liquidus and solidus temperatures |
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Term
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Definition
| describes the number of degrees of freedom, or the number of variables that must be fixed to specify the temperature and composition of a phase (2+C=F+P, where pressure and temperature can change, 1+C=F+P, where pressure or temperature is constant). |
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Term
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Definition
| the conditions that an alloy or ceramic system must meet if the system is to display unlimited solid solubility. Hume-Rothery's rules are necessary but are not sufficient for materials to show unlimited solid solubility. |
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Term
| isomorphous phase diagram |
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Definition
| a phase diagram in which components display unlimited solid solubility. |
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Term
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Definition
| a technique for determining the amount of each phase in a two-phase system |
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Term
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Definition
| when only a maximum amount of a solute material can be dissolved in a solvent material |
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Definition
| curves on phase diagram that describe the liquidus temperatures of all possible alloys |
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Term
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Definition
| the temperature at which the first solid begins to form during solidification |
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Term
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Definition
| any portion, including the whole of a system, which is physically homogeneous within it and bounded by a surface so that it is mechanically separable from any other portions |
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Term
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Definition
| diagrams showing phases present under equilibrium conditions and the phase compositions at each combination of temperature and overall composition. sometimes phase diagrams also indicate metastable phases. |
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Term
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Definition
| an alloy consisting of one phase |
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Term
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Definition
| a solid phase formed by combining multiple elements or compounds such that overall phase has uniform composition and properties that are different from those of the elements or compounds forming it |
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Term
| solid solution strengthening |
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Definition
| increasing the strength of a metallic material via the formation of a solid solution |
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Term
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Definition
| the temperature below which all liquid has completely solidified. curves on phase diagrams that trace the solidus temperatures for all possible alloys. |
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Term
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Definition
| the amount of one material that will completely dissolve in a second material without creating a second phase |
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Term
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Definition
| a horizontal line drawn in a two-phase region of a phase diagram to assist in determining the compositions of the two phases |
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Term
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Definition
| a phase diagram in which there is only one component |
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Term
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Definition
| when the amount of one material that will dissolve in a second material without creating a second phase is unlimited |
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