OS1606 金属表面のナノ微細化を目的とするCyclic Press法の開発

• 植野 正大

  北海道大学大学院工学院

• 中村 孝

  北海道大学大学院工学研究院

• 大久保 賢二

  北海道大学大学院工学研究院

• 渡辺 精一

  北海道大学大学院工学研究院

書誌事項

タイトル別名

• OS1606 A Development of Cyclic Press Method for Nano-structural Refinement of Metal Surface

抄録

In recent studies of very high cycle fatigue, a unique phenomenon of nano-structural refinement has been observed beneath fracture surfaces due to a large number of repeating contacts of themselves over 10^7 cycles. Focusing on this phenomenon, this study proposed a new surface treatment named Cyclic Press Method to refine metal surface without profound plastic deformation. A low cyclic compressive load was given to the surface of Ni-Cr-Mo steel (SNCM439) and Al-Si-Cu die-casting alloy (ACD12) for 5×10^7 cycles. After that, the longitudinal section was processed by FIB and was observed with SIM. As a result, the nanocrystalline structure was clearly formed in the surface layer of both materials. The size of nano-grains and the depth of nano-layer were different between two materials; however, the Cyclic Press Method was shown to be effective in nano-structural refinement of metal surface.

収録刊行物

• M&M材料力学カンファレンス

  M&M材料力学カンファレンス 2012 (0), _OS1606-1_-_OS1606-3_, 2012

  一般社団法人 日本機械学会

キーワード

• Surface Improvement
• Iron and Steel
• Aluminum alloy
• Structural refinement
• Nanocrystalline
• Cyclic Press Method

詳細情報

• CRID: 1390282680848899968
• NII論文ID: 110009937482
• DOI: 10.1299/jsmemm.2012._os1606-1_
• ISSN: 24242845
• Web Site: https://www.jstage.jst.go.jp/article/jsmemm/2012/0/2012__OS1606-1_/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
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