Construction of processing map for biomedical Co-29Cr-6Mo-0.23C-0.14N alloy by using compression tests

Yui Yamashita, Yunping Li, Hiroaki Matsumoto, Yuichiro Koizumi, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The high-temperature deformation behavior of Co-29Cr-6Mo-0.23C-0.14N alloy was investigated by carrying out compression tests; the tests were carried out in the temperature range of 1000-1200°C and strain rates ranging from 0.01 to 30s-1 with a height reduction of approximately 65%. The optimum hot-working conditions were determined from the processing map based on the dynamic materials model. Dynamic recrystallization was observed to occur over the entire temperature and strain rate range. However, uniformly sized grains were formed for strain rates higher than 1 s-1, which is considered to be the optimum hot-working condition. In addition, authors suggested that in extremely low stacking fault energy alloy, explosive and homogeneous formation of mechanical twinning should be considered to be stable state, and new processing map with more detailed description of deformation mechanism seems necessary in future.

Original languageEnglish
Pages (from-to)780-786
Number of pages7
JournalMaterials Transactions
Issue number4
Publication statusPublished - 2011 Apr


  • Cobalt-chromium-molybdenum-carbon-nitrogen alloy
  • Correction
  • Dynamic recrystallization
  • Processing map
  • Twinning

ASJC Scopus subject areas

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


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