Grain refining technique and mechanical properties of the biomedical Co-Cr-Mo alloy

Shingo Kurosu, Yunping Li, Hiroaki Matsumoto, Akihiko Chiba

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Thermomechanical processes combined with reverse transformation from (ε-hcp and M2N) dual-phase to γ-fcc phase of biomedical Co-Cr-Mo-N alloys were examined. According to XRD analysis, the reverse transformation from ε + M2N to γ is completed after heat treating at 1223 to 1373 K without deformation, while after heat treating at 1223 and 1273 K contained residual M2N particles in the γ matrix. After the subsequent hot compression at condition at 1273 K and strain rate less than 1 s-1, and 1223 K and strain rate less than 10 s -1, ultra fine grains less than 1 μm with residual M2NN were obtained. Therefore, it is suggested that the residual M2NN suppressed further growing of DRXed grain. The obtained microstructure with ultra fine grain dispersed with residual M2NN was obtained to demonstrate both grain refining strengthening and precipitation strengthening.

Original languageEnglish
Title of host publicationPRICM7
PublisherTrans Tech Publications Ltd
Pages2184-2187
Number of pages4
ISBN (Print)0878492550, 9780878492558
DOIs
Publication statusPublished - 2010 Jan 1
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2010 Aug 22010 Aug 6

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
CountryAustralia
CityCairns, QLD
Period10/8/210/8/6

Keywords

  • Arain refinement
  • Biomaterial
  • Cobalt-chromium-molybdenum alloy
  • Mechanical properties
  • Microstructure

ASJC Scopus subject areas

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

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  • Cite this

    Kurosu, S., Li, Y., Matsumoto, H., & Chiba, A. (2010). Grain refining technique and mechanical properties of the biomedical Co-Cr-Mo alloy. In PRICM7 (pp. 2184-2187). (Materials Science Forum; Vol. 654-656). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.654-656.2184