Microstructure of cold-rolled copper

Malin, A.S.; Hatherly, M.

doi:10.1179/030634579790438363

Cited by 227 publications

(42 citation statements)

References 14 publications

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“…Andrade et al 37) observed dynamically recrystallized grains as small as 100 nm in Cu at a strain rate of 10 4 s À1 and a total shear strain of $ 8. Even though their grain size is one order of magnitude smaller than the grain size reported in literature, [38][39][40][41][42][43] the result seems to be consistent with the trend extrapolated from the empirical equation of Blaz et al, 44) Fig. 14,…”

Section: Evolution Towards Nanostructures Upon Prolongedsupporting

confidence: 78%

Dynamic Processes for Nanostructure Development in Cu after Severe Cryogenic Rolling Deformation

Wang

Jiao

2003

Mater. Trans.

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The dynamic grain refinement behavior upon severe plastic deformation has been systematically studied in commercial purity copper that was heavily cold rolled to large deformations at cryogenic temperatures. The low-temperature rolling allows the accumulation of extraordinarily high densities of dislocations in Cu, enabling an investigation of the various dynamic recrystallization phenomena upon further deformation. The eventual steady-state grain sizes achieved, as well as the dynamic recrystallization mechanisms, are studied using controlled deformation tests combined with transmission electron microscopy. The dominant mechanisms observed to contribute to grain refinement in Cu include the classical migration dynamic recrystallization process, the deformation twinning, as well as the continuous dynamic recrystallization via progressive lattice rotation upon deformation to extremely large strains. The strain rate and deformation temperature have strong effects on the operative mechanisms and the grain sizes achieved in the ultrafine and nanocrystalline regimes.

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Section: Evolution Towards Nanostructures Upon Prolongedsupporting

confidence: 78%

Dynamic Processes for Nanostructure Development in Cu after Severe Cryogenic Rolling Deformation

Wang

Jiao

2003

Mater. Trans.

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“…They form with preferred planar orientations related to the crystal slip including near the main slip pIane or deviated away from that plane about special rotation axes (Malin and Hatherly 1979;Bay et al 1992;Winther, Huang and Hansen 2000). Second parallel sets may form on planes related to other highly activated slip planes.…”

Section: 1mentioning

confidence: 99%

Deformation microstructures and selected examples of their recrystallization

Hughes

2001

Surface & Interface Analysis

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The elements that are needed to describe a deformation structure—grains, grain boundaries, macroscale banding within crystals, cell blocks, geometrically necessary boundaries and incidental dislocation boundaries (cell boundaries)—are presented and described for fcc metals and alloys of medium to high stacking fault energy. Pertinent to this quantitative description are the local orientations, structural morphology, different boundary misorientations and spacings as a function of strain and deformation conditions. Three specific examples are given in which particular aspects of the deformation structure are shown to direct the recrystallization behavior. Copyright © 2001 John Wiley & Sons, Ltd; first published by Risø National Laboratory.

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“…It is also found that, during cold deformation, a microband structure starts to appear when the strain reaches a certain value [24][25][26][27]. With increasing strain, the propensity for microbands increases and the width of microbands decreases.…”

Section: Microstructure Formed Around Pin Toolmentioning

confidence: 88%