Term
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Definition
| Perm damage, most common, from too much of a load. |
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Term
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Definition
| Response to applied load at high temperature (elevated temp for a long period of time). |
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Term
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Definition
| Max load something can be given w/o perm damage. Varies due to compression. |
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Term
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Definition
| How much energy can be absorbed prior to failure. Opposition is brittle |
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Term
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Definition
| Does the material give w/o changing shape |
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Term
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Definition
| is the given desire to gain or lose an electron |
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Term
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Definition
| Ceramics, Carbon, Semiconductors. Electrons are not free to move, so covalent bonds do not conduct heat or electricity well. Bond strength is directional. |
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Term
| Solid solution stengthening |
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Definition
| when a material is combined with another they become stronger |
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Term
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Definition
| properties dictated by composition and microstructure |
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Term
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Definition
| the direction and distance of movement of a dislocation |
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Term
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Definition
| The total area under the curve, which measures the energy absorbed by the specimen in the process of breaking |
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Term
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Definition
| Resistance to penetration |
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Term
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Definition
| the initial slope of the curve, related direclty to the strength of the atomic bonds. |
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Term
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Definition
| Formed mechanically, from two or more materials, producing unique properties that are not attainable from one group alone. |
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Term
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Definition
Silicon
Germanium
Gallium Arsenide
CdTe, HgCdTe, GaAlAs |
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Term
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Definition
| glassy, short range order only, atoms arranged randomlu (not the same) |
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Term
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Definition
| regular atomic order, atoms arranged orderly (the same) |
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Term
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Definition
| Will be stronger the larger grains |
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Term
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Definition
| the crystal is distorted and damaged. This makes the metal stronger. |
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Term
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Definition
| pure element with more than one crystal structure |
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Term
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Definition
| compound with more than one crystal structure |
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Term
| FCC metals are more ductile than BCC metals which are more ductile than HCP metals |
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Definition
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Term
| In metals, permanent deformation occurs along closest-packed directions |
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Definition
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Term
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Definition
| properties are the same in all directions |
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Term
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Definition
| properties vary with crystallographic directions |
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Term
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Definition
| is an arrangement of points that are surrounded by “identical” neighboring points. |
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Term
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Definition
| is the smallest collection of atoms with the complete symmetry of the crystal. The unit cell will repeat in 3D to build a macroscopic material. |
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Term
| Short range order (solids) |
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Definition
| nearest neighbor ordering only (amorphous solids) |
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Term
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Definition
| ordered arrangement throughout the crystal (crystalline solids) |
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Term
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Definition
| Vacancies, substitutional or interstitial atoms |
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Term
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Definition
| dislocations, extra half plane of atom |
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Term
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Definition
| movement of a dislocation |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| the desire of an atom to gain or lose an electron |
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Term
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Definition
| some atoms have low and high electronegativity, transfers electrons |
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Term
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Definition
| low electronegativity, share atoms amongst all the atoms |
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Term
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Definition
| high electronegativity, share atoms between individual pairs of atoms |
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