焼結鋼におけるＣｕの代替としてのＢおよびＣの添加

• 田弘 隆美

  広島大学大学院

• 鈴木 裕之

  広島大学

• 篠崎 賢二

  広島大学

• 黒木 英憲

  広島大学

書誌事項

タイトル別名

• Addition of Boron and Carbon Instead of Copper in P/M Steel.
• ショウケツ コウ ニ オケル Cu ノ ダイタイ ト シテ ノ B オヨビ C ノ テンカ

抄録

Copper is one of the most important alloying elements in sintered steel parts. However, reduction or removal of copper in the parts which are mainly used in automobiles is desirable for the promotion of recycling of steel from scrapped cars.<BR>Calculation with a thermodynamic software and observation of slumping in shape of small compacts have indicated a low melting point near 1400K(1127°C)in the(lmass%Cr-0.7mass%Mn-0.3mass%Mo)steel-2.5mass%B-lmass%C powder mixture. The temperature is comparable to the melting point of copper or 1357K(1084°C). Thus, boron with carbon is a candidate replacement for copper at temperatures no higher than 1423K(1150°C)which can be easily reached in a conventional mesh belt furnace.<BR>The addition of 2 mass% of the low-melting-point mixture or the combined addition of 0.05mass%B and lmass%C to the Cr-Mn-Mo steel has been proved to be effective in activating sintering. The addition has provided a reduction of sharp corners in the periphery of small pores, leading to a dimple fracture and an improvement in tensile strength of a basic Cr-Mn-Mo-lmass%C sintered steel by 15%.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 48 (10), 884-891, 2001

  一般社団法人 粉体粉末冶金協会

キーワード

• powder metallurgy
• sintered steel
• boron
• liquid phase sintering
• tensile strength

詳細情報

• CRID: 1390001206307105792
• NII論文ID: 10007559600
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.48.884
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 5952807
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5952807
• 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