窒素ガスにより内部窒化させたＴＺＭ合金の低温靭性

• 小林 誠

  岡山理科大学大学院理学研究科

• 平岡 裕

  岡山理科大学理学部応用物理学科

• 長江 正寛

  岡山大学環境理工学部環境物質工学科

• 高田 潤

  岡山大学工学部精密応用化学科

書誌事項

タイトル別名

• Low-Temperature Toughness of TZM Alloy which Internally Nitrided by N2 Gas.
• チッソ ガス ニ ヨリ ナイブ チッカ サセタ TZM ゴウキン ノ テイオンジンセイ

抄録

In order to investigate the effect of dispersion of fine nitride particles on the low-temperature toughness of molybdenum, bend tests were performed for TZM alloy which had been internally nitrided by N₂ gas and demonstrated surface hardness of 250Hv and 300Hv. In this study the low-temperature fracture strength and ductility were represented by critical stress and critical temperature, respectively.<BR>The results are summarized as follows. (1) Yield strength of the nitrided specimens was generally much higher than that of the recrystallized ones. (2) Critical stress of the nitrided specimens was approximately as high as that of the recrystallized ones. (3) Fracture mode of the nitrided specimens was almost similar to that of the recrystallized ones. Transgranular fracture was predominant. (4) Ductility of the nitrided specimens was much lower than that of the recrystallized ones. These results are attributed to the distribution of nitride particles. Very fine nitride particles were observed predominantly in the matrix, but not at and near the grain boundaries.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 46 (7), 705-709, 1999

  一般社団法人 粉体粉末冶金協会

キーワード

• TZM alloy
• internal nitriding
• critical stress
• critical temperature
• fractography

詳細情報

• CRID: 1390001206309038592
• NII論文ID: 10005740830
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.46.705
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4800736
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4800736
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可