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

András Borbély, P. Szabó, I. Groma

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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 μm. 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.

Original languageEnglish
Pages (from-to)132-135
Number of pages4
JournalMaterials Science and Engineering A
Volume400-401
Issue number1-2 SUPPL.
DOIs
Publication statusPublished - Jul 25 2005

Fingerprint

Strain hardening
work hardening
Single crystals
transition points
single crystals
Backscattering
Crystal orientation
Copper
Phase transitions
phase transformations
Electrons
backscattering
copper
radii
evaluation
electrons

Keywords

  • Copper
  • Dislocations
  • Electron backscattering diffraction
  • Work-hardening

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Orientation correlation in tensile deformed [0 1 1] Cu single crystals. / Borbély, András; Szabó, P.; Groma, I.

In: Materials Science and Engineering A, Vol. 400-401, No. 1-2 SUPPL., 25.07.2005, p. 132-135.

Research output: Contribution to journalArticle

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AB - 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 μm. 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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