ひずみ硬化設計による超微細粒低炭素鋼の強度‐延性バランスの改善

• 林 透

• 長井 寿

書誌事項

タイトル別名

• Improvement of Strength-Ductility Balance for Low Carbon Ultrafine-Grained Steels through Strain Hardening Design.
• ヒズミ コウカ セッケイ ニ ヨル チョウビサイリュウ テイタンソ コウ ノ キョウド エンセイ バランス ノ カイゼン

抄録

Grain refinement is the only one method to increase both strength and toughness for low carbon steel. However, ultrafine-grained steel has some problems. One of these is the shortness of uniform elongation. Ashby et al. show that an increase in volume fraction of second phase and a decrease in its diameter increase strain hardening rate and therefore increase uniform elongation. We have tried to apply this idea to the low carbon ultrafine-grained steel by using carbides as the second phase. Superior uniform elongation is promised by increasing the carbon content to lead an increase in the volume fraction of carbide (f) or by decreasing the rolling temperature to make the diameter of carbide (d) finer. It is evident that an increase in f/d increases the strain hardening rate or the uniform elongation of low carbon ultrafine-grained steel.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 68 (675), 1553-1558, 2002

  一般社団法人 日本機械学会

キーワード

• Iron and Steel
• Material Design
• Ultrafine Grain
• Uniform Elongation
• Second Phase
• Carbide
• Strain Hardening Rate
• Ashby's Equation

詳細情報

• CRID: 1390282679423246464
• NII論文ID: 110002378126
• NII書誌ID: AN0018742X
• DOI: 10.1299/kikaia.68.1553
• COI: 1:CAS:528:DC%2BD3sXhtVGrsLs%3D
• ISSN: 18848338
• ISSN: 03875008
• ISSN: http://id.crossref.org/issn/03875008
• NDL書誌ID: 6365947
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6365947
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/68/675/68_675_1553/_pdf
• 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