Dynamic recrystallization mechanisms operating under different processing conditions

Andrey Belyakov, Nadezhda Dudova, Marina Tikhonova, Taku Sakai, Kaneaki Tsuzaki, Rustam Kaibyshev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Dynamic recrystallization (DRX) is one of the most important mechanisms for microstructure evolution during deformation of various metals and alloys. So-called discontinuous DRX usually develops in structural materials with low to medium stacking fault energy during hot working. The local migration, i.e. bulging, of grain boundaries leads to the formation of recrystallization nuclei, which then grow out consuming work-hardened surroundings. The cyclic character of nucleation and growth of new grains during deformation results in a dynamically constant average grain size. The dynamic grain size is sensitively dependent on temperature and strain rate and can be expressed by a power law function of flow stress with a grain size exponent of about -0.7 under conditions of hot working. Recent studies on DRX phenomenon suggest that a decrease in deformation temperature changes the structural mechanism for new grain formation. As a result, the grain size exponent in the relationship between the dynamic grain size and flow stress approaches about -0.25 under warm working conditions.

Original languageEnglish
Title of host publicationTHERMEC 2011
Pages2704-2709
Number of pages6
DOIs
Publication statusPublished - Jan 30 2012
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: Aug 1 2011Aug 5 2011

Publication series

NameMaterials Science Forum
Volume706-709
ISSN (Print)0255-5476

Other

Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
CountryCanada
CityQuebec City, QC
Period8/1/118/5/11

Fingerprint

Dynamic recrystallization
Hot working
grain size
Plastic flow
hot working
Processing
Stacking faults
Strain rate
grain formation
exponents
bulging
Grain boundaries
Nucleation
Metals
stacking fault energy
Temperature
Microstructure
strain rate
grain boundaries
nucleation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Belyakov, A., Dudova, N., Tikhonova, M., Sakai, T., Tsuzaki, K., & Kaibyshev, R. (2012). Dynamic recrystallization mechanisms operating under different processing conditions. In THERMEC 2011 (pp. 2704-2709). (Materials Science Forum; Vol. 706-709). https://doi.org/10.4028/www.scientific.net/MSF.706-709.2704

Dynamic recrystallization mechanisms operating under different processing conditions. / Belyakov, Andrey; Dudova, Nadezhda; Tikhonova, Marina; Sakai, Taku; Tsuzaki, Kaneaki; Kaibyshev, Rustam.

THERMEC 2011. 2012. p. 2704-2709 (Materials Science Forum; Vol. 706-709).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Belyakov, A, Dudova, N, Tikhonova, M, Sakai, T, Tsuzaki, K & Kaibyshev, R 2012, Dynamic recrystallization mechanisms operating under different processing conditions. in THERMEC 2011. Materials Science Forum, vol. 706-709, pp. 2704-2709, 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011, Quebec City, QC, Canada, 8/1/11. https://doi.org/10.4028/www.scientific.net/MSF.706-709.2704
Belyakov A, Dudova N, Tikhonova M, Sakai T, Tsuzaki K, Kaibyshev R. Dynamic recrystallization mechanisms operating under different processing conditions. In THERMEC 2011. 2012. p. 2704-2709. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.706-709.2704
Belyakov, Andrey ; Dudova, Nadezhda ; Tikhonova, Marina ; Sakai, Taku ; Tsuzaki, Kaneaki ; Kaibyshev, Rustam. / Dynamic recrystallization mechanisms operating under different processing conditions. THERMEC 2011. 2012. pp. 2704-2709 (Materials Science Forum).
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