Stored energy and annealing behavior of heavily deformed aluminium

Naoya Kamikawa, Xiaoxu Huang, Yuka Kondo, Tadashi Furuhara, Niels Hansen

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

5 Citations (Scopus)

Abstract

It has been demonstrated in previous work that a two-step annealing treatment, including a low-temperature, long-time annealing and a subsequent high-temperature annealing, is a promising route to control the microstructure of a heavily deformed metal. In the present study, structural parameters are quantified such as boundary spacing, misorientation angle and dislocation density for 99.99% aluminium deformed by accumulative roll-bonding to a strain of 4.8. Two different annealing processes have been applied; (i) one-step annealing for 0.5 h at 100-400°C and (ii) two-step annealing for 6 h at 175°C followed by 0.5 h annealing at 200-600°C, where the former treatment leads to discontinuous recrystallization and the latter to uniform structural coarsening. This behavior has been analyzed in terms of the relative change during annealing of energy stored as elastic energy in the dislocation structure and as boundary energy in the high-angle boundaries.

Original languageEnglish
Title of host publicationRecrystallization and Grain Growth IV
EditorsE.J. Palmiere, B.P. Wynne
PublisherTrans Tech Publications Ltd
Pages367-372
Number of pages6
ISBN (Print)9783037853900
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event4th International Conference on Recrystallization and Grain Growth, ReX and GG IV - Sheffield, United Kingdom
Duration: 2010 Jul 42010 Jul 9

Publication series

NameMaterials Science Forum
Volume715-716
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other4th International Conference on Recrystallization and Grain Growth, ReX and GG IV
CountryUnited Kingdom
CitySheffield
Period10/7/410/7/9

Keywords

  • Accumulative roll-bonding
  • Aluminium
  • Recrystallization
  • Severe plastic deformation
  • Stored energy

ASJC Scopus subject areas

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

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