High Temperature Strength of WC-Co Base Cemented Carbide Having Highly Oriented Plate-Like Triangular Prismatic WC Grains.

• Kinoshita Satoshi

  Toshiba Tungaloy Co., Ltd.

• Kobayashi Masaki

  Toshiba Tungaloy Co., Ltd.

• Hayashi Koji

  Institute of Industrial Science, The University of Tokyo

Abstract

We have already reported that room temperature fracture toughness of our newly developed WC-Co base cemented carbide (alloy) having highly oriented plate-like triangular prismatic WC grains are larger than that of the conventional alloy at an identical hardness of alloy. In this study, high temperature mechanical properties such as transverse-rupture strength (TRS), creep-rupture time, etc., of the new alloy at 1273 K were clarified to be superior than those of the conventional alloy: TRS of the new alloy was higher by 10-20% and creep rupture time was longer by 50-100% than the conventional alloy. The cause for such superiority was attributed to the difficulty in the generation and propagation of stable cracks in the new alloy compared with in the conventional alloy, probably due to more rigid skeleton of WC which were generated and grown by the reaction of Co_xW_yC_z with graphite.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 49 (4), 299-305, 2002

  Japan Society of Powder and Powder Metallurgy

Keywords

• cemented carbides
• hardmetal
• orientation
• anisotropy
• high temperature
• mechanical property
• tungsten carbide
• plate-like
• prismatic

Details

• CRID: 1390001206306815616
• NII Article ID: 10008222584
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.49.299
• COI: 1:CAS:528:DC%2BD38XjvVWqsbs%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 6146249
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6146249
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed