Grain refinement of high-purity FCC metals using equal-channel angular pressing

Zenji Horita, Kaoru Kishikawa, Keiichi Kimura, Kohei Tatsumi, Terence G. Langdon

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

18 Citations (Scopus)

Abstract

Equal-channel angular pressing (ECAP) is a valuable technique for refining grain sizes to the submicrometer or the nanometer range. This study explores the reason for the difference in the grain refining behavior between pure Al and pure Cu. First, very high purity levels were adopted in order to minimize any effects of impurities: 99.999% for Al and 99.99999% for Cu. Second, high purity (99.999%) Au was also used in order to examine the effect of stacking fault energy. All three pure metals were subjected to ECAP and microstructural observations and hardness measurements were undertaken with respect to the number of ECAP passes. It is concluded that the stacking fault energy plays an important role and accounts for the difference in the grain refining behavior in the ECAP process.

Original languageEnglish
Title of host publicationRecrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
PublisherTrans Tech Publications Ltd
Pages1273-1278
Number of pages6
EditionPART 2
ISBN (Print)087849443X, 9780878494439
DOIs
Publication statusPublished - 2007 Jan 1
Externally publishedYes
Event3rd International Conference on Recrystallization and Grain Growth, ReX GG III - Jeju Island, Korea, Republic of
Duration: 2007 Jun 102007 Jun 15

Publication series

NameMaterials Science Forum
NumberPART 2
Volume558-559
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference3rd International Conference on Recrystallization and Grain Growth, ReX GG III
CountryKorea, Republic of
CityJeju Island
Period07/6/1007/6/15

Keywords

  • EBSD
  • Equal channel angular pressing (ECAP)
  • FCC metals
  • Hardness
  • Severe plastic deformation (SPD)
  • Stacking fault energy
  • Ultrafine grain sizes

ASJC Scopus subject areas

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

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