Effect of atmospheric control during MA-HIP process on mechanical properties of oxide dispersion-strengthened Cu alloy

• Noto, Hiroyuki

• YAMADA, T.

• Hishinuma, Yoshimitsu

• MUROGA, Takeo

Abstract

0000-0001-9016-2318

In this study, mechanical properties of Dispersion Strengthened (DS)-Cu-Al (aluminum) and Zr (zirconium) alloys, which were fabricated by an MA-HIP method, were investigated for application to the heat sink materials of fusion reactors. The effect of air exposure before the HIP process was studied using a NIFS-Sealing Device. Cu–Al specimen with air exposure before HIP was broken during wire-electrical discharge formation. Cu–Al specimen without air exposure exhibited high fracture strength, but without yielding. Cu–Zr specimen, both with and without the exposure, yielded and exhibits elongation. An increase in yield and tensile strength by approximately 61% and 45%, respectively, were obtained for Cu–Zr specimen by avoiding air exposure. The results showed that Cu–Zr specimen is less susceptible to the atmosphere of the MA-HIP process than Cu–Al.

Journal

• Fusion Engineering and Design

  Fusion Engineering and Design 124 1024-1027, 2017-11

  ELSEVIER

Keywords

• Copper alloy
• Mechanical alloying
• Dispersion strengthening
• Mechanical properties

Details

• CRID: 1050290769991727616
• NII Article ID: 120007183004
• NII Book ID: AA10691446
• ISSN: 09203796
• HANDLE: 10655/00012883
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10915
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles
  • KAKEN