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· The insights provided by this
model suggest ways to influence material properties.
· Methods of strengthening crystalline materials will
depend on blocking dislocation motion.
· Dislocation interactions with atomic impurities, second phases,
grain boundaries, surfaces, and other dislocations will all change the plastic
response of a material.
· Mechanical
deformation of a material increases the dislocation
density
and causes Work or Strain Hardening.
· Dislocations
are non-thermodynamic defects in crystals, and their
number can be reduced by heating the material close to its melting point.
· Dislocations cannot exist in
amorphous
materials, and these will have different mechanical behavior than their
crystalline counterpart.
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