Influence of WC grain size and Co mass content on mechanical properties of WC-Co cemented carbides

Shingo Okamoto, Kakuroh Ohtuka, Yuji Nakazono, Yoshinobu Shimoitani, Jun Takada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The mechanical properties of WC-Co cemented carbides were investigated in order to find the way to lengthen the lives of the bits including WC-Co cemented carbides, installed in tunnel boring machines. The compression and bending tests were first carried out using the test pieces made of the WC-Co cemented carbides including Co of 10%, of which grain size was 3, 6, 20 or 30 [μm], and the ones of which grain size was 20 [μm], including Co of 5, 10, 15 or 20%. The finite-element analysis was performed to find the tensile strength using the results of the compression and bending tests. We were able to draw an interesting results as follows: WC-Co cemented carbides of which grain size is 20 or 30 [μm] has the property of ductility, while the ones of which grain size is 3 or 6 [μm] has the property of brittleness.

Original languageEnglish
Pages (from-to)447-452
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume54
Issue number4
Publication statusPublished - Apr 2005

Fingerprint

carbides
Carbides
grain size
mechanical properties
Mechanical properties
compression tests
Bending tests
boring machines
brittleness
Brittleness
ductility
tensile strength
Ductility
tunnels
Tunnels
Tensile strength
Finite element method

Keywords

  • Brittleness
  • Co mass content
  • Ductility
  • Strength
  • WC grain size
  • WC-Co cemented carbides

ASJC Scopus subject areas

  • Metals and Alloys
  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

Cite this

Influence of WC grain size and Co mass content on mechanical properties of WC-Co cemented carbides. / Okamoto, Shingo; Ohtuka, Kakuroh; Nakazono, Yuji; Shimoitani, Yoshinobu; Takada, Jun.

In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 54, No. 4, 04.2005, p. 447-452.

Research output: Contribution to journalArticle

Okamoto, Shingo ; Ohtuka, Kakuroh ; Nakazono, Yuji ; Shimoitani, Yoshinobu ; Takada, Jun. / Influence of WC grain size and Co mass content on mechanical properties of WC-Co cemented carbides. In: Zairyo/Journal of the Society of Materials Science, Japan. 2005 ; Vol. 54, No. 4. pp. 447-452.
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