New ternary compound Co3(Ge, W) with L12 structure

Hibiki Chinen, Jun Sato, Toshihiro Omori, Katsunari Oikawa, Ikuo Ohnuma, Ryosuke Kainuma, Kiyohito Ishida

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48 Citations (Scopus)


Microstructural investigation of the Co-11.0Ge-5.7W (at.%) ternary alloy was conducted. Fine cuboidal precipitates were observed in this alloy annealed at 1173 K and the crystal structure of the precipitate phase was identified as an L12 structure with a composition of Co-12.6Ge-8.2W (at.%). The solvus temperature of this phase was about 1180 K. Since a stable L12 phase has not been reported in the Co-W and Co-Ge binary systems, this ternary compound is a new L12 phase designated as γ′-Co3(Ge, W).

Original languageEnglish
Pages (from-to)141-143
Number of pages3
JournalScripta Materialia
Issue number2
Publication statusPublished - 2007 Jan


  • Cobalt-germanium-tungsten alloy
  • Intermetallic compounds
  • Phase transformations
  • Precipitation
  • Refractory metals


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