Microstructure and Mechanical Properties of Heavily Deformed Copper

Nethercott, R.B.; Retchford, J. A.; Coyle, R. A.

doi:10.1016/b978-1-4832-8423-1.50089-4

Cited by 1 publication

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such features are normal after significant dynamic recrystallization. 28) The selected area diffraction (SAD) pattern from a sample area of 4.5 mm 2 shows fairly uniform rings, confirming a nearly continuous and wide distribution of mis orientations. The average grain size was measured using the linear intercept method to be 205 nm from over 150 grains, much smaller than that of the as-rolled grains/ subgrains observed in Fig.…”

Section: Microstructure Evolutionmentioning

confidence: 97%

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

Wang

Jiao

2003

Mater. Trans.

View full text Add to dashboard Cite

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.

show abstract

Section: Microstructure Evolutionmentioning

confidence: 97%