Influence of processing regimes on fine-grained microstructure development in an AlMgSc alloy by hot equal-channel angular pressing

Oleg Sitdikov, Elena Avtokratova, Rita Babicheva, Taku Sakai, Kaneaki Tsuzaki, Yoshimi Watanabe

Research output: Contribution to journalReview articlepeer-review

17 Citations (Scopus)

Abstract

Grain refinement during equal-channel angular pressing (ECAP) was studied in a commercial Al5.8% Mg0.3% Sc alloy at temperatures from 473 to 723K (̃0.50.8T m). The samples were quenched in water in every ECAP pass, which is a conventional cyclic process. ECAP to ε = 12 resulted in ultrafine-grained structures developed uniformly at high strains at 473 and 723 K, while processing at 573K led to the evolution of a duplex grain structure containing partially much coarser grains. In contrast, ECAP process continuously carried out to ε = 12 without interruption at 573 K, resulted in development of a uniform ultrafine-grained structure. Effects of processing regimes on microstructural evolution in the AlMgSc alloy are discussed.

Original languageEnglish
Pages (from-to)56-62
Number of pages7
JournalMaterials Transactions
Volume53
Issue number1
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

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

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