Effect of Copper Addition on Precipitation Behavior near Grain Boundary in AlZnMg Alloy

Kenji Matsuda, Toru Yasumoto, Artenis Bendo, Taiki Tsuchiya, Seungwon Lee, Katsuhiko Nishimura, Norio Nunomura, Calin D. Marioara, Adrian Levik, Randi Holmestad, Hiroyuki Toda, Masatake Yamaguchi, Ken Ichi Ikeda, Tomoyuki Homma, Susumu Ikeno

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The effect of Cu-addition on age-hardening and precipitation have been investigated by hardness measurement, tensile test, high resolution transmission electron microscopy (HRTEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) techniques. Higher hardness, strength, and lower elongation were caused by increasing amount of Zn + Mg because of increased number density of precipitates. Cu addition also provided even higher peak hardness, strength, and lower elongation. The alloy containing highest Cu content had fine precipitates of GPB-II zones or the second clusters, in the precipitate free zones (PFZs) and the matrix, together with

Original languageEnglish
Pages (from-to)1688-1696
Number of pages9
JournalMaterials Transactions
Issue number8
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

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


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