硬質材料　　Ｍｏ２ＦｅＢ２系硬質合金の室温微小塑性と高温内部摩擦

• 八木 輝明

  東京理科大学

• 高木 研一

  東洋鋼鈑(株)技術部

• 桃澤 信幸

  東京理科大学

• 西山 勝廣

  東京理科大学

書誌事項

タイトル別名

• Room Temperature Microplasticity and High Temperature Internal Friction of Mo2FeB2 Based Hard Alloys.
• Mo2FeB2ケイ コウシツ ゴウキン ノ シツオン ビショウ ソセイ ト コ

抄録

Influence of strain amplitude and temperature on the internal friction of Mo₂FeB₂ based hard alloys were measured by torsional vibration method. The strain amplitude dependency of internal friction was observed. It became clear from the study about Granato-Lücke plots that the mechanism of this relaxation is attributed to break away model of dislocation. It was observed that microplasticity at room temperature appeared in order of C70(Mo₂FeB₂-54%iron based binder(10%Cr, 5%Ni)), V31(Mo2FeB2-34%iron based binder(6%Cr, 6%Ni)), H71(Mo₂FeB₂-54%iron based binder(17%Cr, 19%Ni)). In the temperature dependency of internal friction of the hard alloys containing martensite phase in the bonding phase, relaxation peak caused by the phase transformation from austenite phase to martensite phase was appeared at 1033-1068 K and its activation energy and phase transformation temperature were 140-145 kJ/mol and 1093-1173 K, respectively. At following high temperature, a conspicuous increase of the internal friction probably based on plastic flow of the grain boundary was observed. Its activation energy was 106-218 kJ/mol.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 45 (6), 553-560, 1998

  一般社団法人 粉体粉末冶金協会

キーワード

• cermet
• internal friction
• microplasticity
• activation energy
• plastic flow

詳細情報

• CRID: 1390282681285253632
• NII論文ID: 10002052244
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.45.553
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4502279
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4502279
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可