Ｍｏ２ＦｅＢ２ほう化物系硬質合金の焼結機構と機械的性質

• 井手 恒幸

  東洋鋼鈑(株)技術研究所

• 中野 和則

  東洋鋼鈑(株)技術研究所

• 高木 研一

  東洋鋼鈑(株)技術研究所

書誌事項

タイトル別名

• Sintering mechanisms and mechanical properties of Mo2FeB2 based hard alloys.
• Mo2FeB2 ホウカブツケイ コウシツ ゴウキン ノ ショウケツ キコウ ト

抄録

The sintering phenomena of Fe-6 wt%B-(0-58) wt%Mo alloys are studied by means of TG-DTA, dilatometric measurements and X-ray diffractometry. In addition, the mechanical properties of the sintered alloys are discussed.<BR>The optimum process-property relations can be summarized as follows:<BR>(1)Highest transverse rupture strength values around 200 kg/mm² are obtained for the 48 wt%Mo alloy.<BR>(2)The 48 wt%Mo alloy consists of the Mo₂FeB₂ and a small amount of Fe₂B as hard phases and of an Fe binder phase.<BR>(3)The Mo₂FeB₂ phase is formed in the temperature range 750-1090°C. The liquid phase sintering of the alloy is accomplished by two different liquid phases produced by two different reactions. The first reaction, γ-Fe+Fe₂B→L₁, occurs in a temperature range 1090-1150°C, this being somewhat lower than expected for the binary Fe-Fe₂B system presumably due to the presence of Mo. The second reaction, γ-Fe+Mo₂FeB₂→L₂, occurs above 1150°C.<BR>(4)The optimum sintering temperature lies slightly above the temperature at which the reaction γ-Fe+Mo₂FeB₂→L₂ occurs.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 34 (7), 302-308, 1987

  一般社団法人 粉体粉末冶金協会

キーワード

• Materials Chemistry
• Metals and Alloys
• Industrial and Manufacturing Engineering
• Mechanical Engineering

詳細情報

• CRID: 1390282681283992576
• NII論文ID: 130000813138
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.34.302
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 3158033
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3158033
• 本文言語コード: ja
• データソース種別:
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可