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Plastic deformations are defined as the irreversible deformation of a material. Elastic deformations would be reversible.

Generally metals can undergo large plastic transformations, while ceramics cannot. This is because of the bonding between these materials.

Metallic bonding (in metals) allows the atoms to move relative to each other, while covalent bonding (in ceramics) do not.

Refer to stress/strain curves for these materials (the straight line at the start being the elastic portion of the graph; once it starts to curve it is being deformed plastically).

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12y ago

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