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13 Cards in this Set
- Front
- Back
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The plastic deformation of a metal at a temperature below that at which it recrystallizes.
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cold working.
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The shear stress, resolved within aslip plane and direction, that is required to initiate slip.
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critical resolved shear stress ( crss).
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The total dislocation length per unit volume of material; alternately, the number of dislocations that intersect a unit area of a random surface section.
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dislocation density.
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The increase in average grain size of a polycrystalline material; for most materials, an elevated- temperature heat treatment is necessary.
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grain growth.
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Slight displacements of atoms relative to their normal lattice positions, normally imposed by crystalline defects such as dislocations, and interstitial and impurity atoms.
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lattice strains.
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The relief of some of the internal strain energy of a previously cold-worked metal, usually by heat treatment.
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recovery.
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The formation of a new set of strain-free grains within a previously cold-worked material; normally an annealing heat treatment is necessary.
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recrystallization.
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For a particular alloy, the minimum temperature at which complete recrystallization will occur within approximately one hour.
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recrystallization temperature.
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An applied tensile or compressive stress resolved into a shear component along a specific plane and direction within that plane.
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resolved shear stress.
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Plastic deformation as the result of dislocation motion; also, the shear displacement of two adjacent planes of atoms.
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slip
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The combination of a crystallographic plane and, within that plane, a crystallographic direction along which slip (i.e., dislocation motion) occurs.
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slip system.
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Hardening and strengthening of metals that result from alloying in which a solid solution is formed. The presence of impurity atoms restricts dislocation
Mobility |
solid-solution strengthening.
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The increase in hardness and strength of a ductile metal as it is plastically deformed below its recrystallization temperature.
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strain hardening.
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