２１世紀における自動車部品の焼結材料技術　　焼結低合金鋼の高性能化に向けたメゾヘテロ組織制御　第２報

• 松田 光弘

  熊本大学工学部知能生産システム工学科

• 三浦 秀士

  熊本大学工学部知能生産システム工学科

書誌事項

タイトル別名

• Mezzo-Heterogeneous Microstructural Control for High Performance Sintered Low Alloy Steels. 2nd report.
• ショウケツ テイゴウキン コウ ノ コウセイノウカ ニ ムケタメゾヘテロ ソシキ セイギョ ダイ2ホウ

抄録

In the previous report on the sintered low alloy steels (4600grade, 0.4mass%C) produced by MIM process varying Ni content from 0 to 8 mass%, the mechanical properties were improved significantly with increasing Ni content to 6mass%. This was attributed to the solution strengthening and the mezzo-heterogeneous microstructure which were consisted of Ni rich martensite surrounded by a network of tempered martensite. However, the tensile and fatigue strength of the steel added 8 mass% Ni were dropped by the increase of retained austenite. In this study, the effect of the different type of Ni powders on the mechanical properties of Fe-6Ni-0.5Mo-0.2Mn (mass%) was investigated to clarify and optimize the mezzo-heterogeneous microstructure.<BR>The tensile properties of the heat treated steels using the spherical Ni powder were lower than those using the spiky Ni powder. This seems to be due to the segregated distribution considerably of Ni rich phase and the decrease of Ni diffusion rate.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 48 (5), 451-455, 2001

  一般社団法人 粉体粉末冶金協会

キーワード

• metal injection molding
• low alloy steels
• Ni powder
• heterogeneous microstructure
• mechanical properties

詳細情報

• CRID: 1390001206307201536
• NII論文ID: 10007482997
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.48.451
• COI: 1:CAS:528:DC%2BD3MXksF2nt74%3D
• ISSN: 18809014
• ISSN: 05328799
• ISSN: http://id.crossref.org/issn/05328799
• NDL書誌ID: 5773561
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5773561
• 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