Tem observation of precipitates in excess Mg-type Al-Mg-Si alloys aged at 473K after deformation

Yurie Ogawa, Susumu Ikeno, Yasuharu Yoshimura, Kazuhiko Kita, Kenji Matsuda

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

It is well known that transition metals improve mechanical properties of Al-Mg-Si alloy. Thermo-mechanical treatment is also effective for improving the strength of Al-Mg-Si alloy. In this work, the aging behavior of deformed excess Mg-type Al-Mg-Si alloy including Ag and Cu was investigated by hardness test and TEM observation. The needle-shaped precipitates were aligned in the <001> directions of the matrix in Cu addition alloy at 473K for 3.84ks. Dislocation contrast was observed in 10% rolled specimens, which increased with amount of deformation. The precipitates were observed on dislocations but not in the matrix for 0.24ks. The precipitates were observed in the matrix with increasing aging time.

Original languageEnglish
Title of host publicationAluminium Alloys, ICAA 2014
EditorsKnut Marthinsen, Bjørn Holmedal, Yanjun Li
PublisherTrans Tech Publications Ltd
Pages988-991
Number of pages4
ISBN (Print)9783038351207
DOIs
StatePublished - 2014
Event14th International Conference on Aluminium Alloys, ICAA 2014 - Trondheim, Norway
Duration: 2014/06/152014/06/19

Publication series

NameMaterials Science Forum
Volume794-796
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference14th International Conference on Aluminium Alloys, ICAA 2014
Country/TerritoryNorway
CityTrondheim
Period2014/06/152014/06/19

Keywords

  • Age-hardening behavior
  • Al-Mg-Si alloy
  • Tem

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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