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

抄録

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.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 49 (4), 299-305, 2002

  一般社団法人 粉体粉末冶金協会

キーワード

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

詳細情報

• CRID: 1390001206306815616
• NII論文ID: 10008222584
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.49.299
• COI: 1:CAS:528:DC%2BD38XjvVWqsbs%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 6146249
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6146249
• 本文言語コード: en
• データソース種別:
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