plastic deformation


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Related to plastic deformation: ductility

plastic deformation

[′plas·tik ‚dē‚fȯr′mā·shən]
(mechanics)
Permanent change in shape or size of a solid body without fracture resulting from the application of sustained stress beyond the elastic limit.

plastic flow, plastic deformation

The deformation of a plastic material beyond the point of recovery, accompanied by continuing deformation with no further increase in stress; results in a permanent change in shape.
References in periodicals archive ?
Plastic deformation in the form of a concave deformation pattern was observed along the scratch direction.
Closer observation of the wear pits reveals smooth appearance of the worn surface along with signs of plastic deformation. Closely spaced deformation bands are also observed.
followed by plastic deformation for the next 60 sec.
Thus, relatively large indentation forces and depths are normally applied to a reference material that either has a high modulus or exhibits significant plastic deformation, i.e., a sample that has a high ratio of E/H.
Under air exposure, the Type 304L austenitic stainless steel specimens fractured purely by plastic deformation. The 304L specimens exposed to the salt mixtures fractured without substantial plastic deformation, showing fractographic features typical of transgranular SCC.
The two other mechanisms involve plastic deformation of some form: either shear yielding or cavitation.
The visible slight characteristics of plastic deformation are found, which may be attributed to the chromium coating of T10 steel in Figure 3(a).
Here, the hardness and the resistance to plastic deformation of 4 kinds of materials were studied.