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Orientation correlation in tensile deformed [0 1 1] Cu single crystals

✍ Scribed by András Borbély; Péter J. Szabó; István Groma

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
196 KB
Volume
400-401
Category
Article
ISSN
0921-5093

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✦ Synopsis

Local crystallographic orientation of tensile deformed copper single crystals was investigated by the electron backscattering technique. Statistical evaluation of the data reveals the presence of an increased crystallographic correlation at the transition point between stages II and III of work-hardening. The transition state has the lowest probability of finding geometrically necessary dislocations in circular regions of radius smaller than 8 m. According to the present results and other data showing that the relative fluctuation of the dislocation density has a maximum at the transition point, we conclude that the transition from stages II to III of work-hardening is similar to a second-order phase transformation of the statistical dislocation system.

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