Mechanical properties of co-based L12 intermetallic compound Co3(Al,W)

Seiji Miura, Kenji Ohkubo, Tetsuo Mohri

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Mechanical properties of L12-Co3(Al,W) polycrystalline sample are investigated by compression testing at various temperature ranging from room temperature to 1193 K. It was found that at room temperature the 0.2% flow stress is 410MPa and the compressive ductility is higher than 10%, whereas at 1193 K the 0.2% flow stress is 382 MPa and the compressive ductility is about 10%. Two candidates for the reaction scheme of the Co-rich region of the Co-Al-W ternary phase diagram are proposed by combining the results of microstructure observation, X-ray diffractometry and the previous report.

Original languageEnglish
Pages (from-to)2403-2408
Number of pages6
JournalMaterials Transactions
Volume48
Issue number9
DOIs
Publication statusPublished - 2007 Sep 1

Keywords

  • Cobalt alloys
  • High temperature deformation
  • Intermetallic compounds
  • Phase diagram

ASJC Scopus subject areas

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

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