Effect of grain refinement by ECAP on creep of pure Cu

Blum, Wolfgang; Dvořák, Jiří; Král, Petr Toman Karel; Eisenlohr, Philip; Sklenička, Váčlav

doi:10.1016/j.msea.2013.10.022

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Effect of grain refinement by ECAP on creep of pure Cu

MPS-Authors

/persons/resource/persons125124

Eisenlohr, Philip
MPG-FhG Computational Mechanics of Polycrystals Group, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Blum, W., Dvořák, J., Král, P. T. K., Eisenlohr, P., & Sklenička, V. (2014). Effect of grain refinement by ECAP on creep of pure Cu. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 590, 423-432. doi:10.1016/j.msea.2013.10.022.

Cite as: https://hdl.handle.net/21.11116/0000-0001-C725-5

Abstract

The creep behavior of pure, initially coarse-grained Cu of 99.99 purity was investigated at a temperature of 473K in tension and compression in dependence on predeformation by ECAP (route BC) at ambient temperature. Static recrystallization during heating to test temperature generates a microcrystalline structure; its homogeneity increases with increasing ECAP-predeformation. The high-angle boundaries are sufficiently closely spaced to exert a significant influence on work hardening and quasi-stationary deformation where generation and loss of free dislocations are at approximate balance. This influence is quantitatively interpreted in terms of control of deformation resistance shifting from low- to high-angle boundaries as predeformation increases and creep stress decreases. The microcrystalline structure created by the thermomechanical treatment consisting of ECAP and static recrystallization leads to favorable combination of relatively high creep resistance and high ductility at 473K with fracture strains in the order of 0.5. © 2013 Elsevier B.V.