Microstructural control of an Al-Mg-Si alloy using equal-channel angular pressing

Keiichiro Oh-Ishi, Yukihiro Hashi, Akiko Sadakata, Kenji Kaneko, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalConference article

48 Citations (Scopus)

Abstract

Severe plastic deformation using the process of equal-channel angular pressing (ECAP) was applied to an age-hardenable Al-Mg-Si alloy containing precipitate particles. Subsequent microstructual changes were examined using conventional transmission electron microscopy and energy-filtered transmission electron microscopy. It is shown that metastable rod-shaped β' particles are fragmented into round-shaped particles by the severe straining and there is a dissolution of the particles with an increase in the imposed strain. Further aging leads to the formation of cube-shaped particles in sample where the dissolution of particles occurs. It is also shown that the aging is significantly accelerated, and Si particles are formed, if it is undertaken using samples subjected to ECAP.

Original languageEnglish
Pages (from-to)333-338
Number of pages6
JournalMaterials Science Forum
Volume396-402
Issue number1
DOIs
Publication statusPublished - Jan 1 2002
EventAluminium Alloys 2002 Their Physical and Mechnaical Properties: Proceedings of the 8th International Conference ICAA8 - Cambridge, United Kingdom
Duration: Jul 2 2002Jul 5 2002

All Science Journal Classification (ASJC) codes

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

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