Ａｌｌｏｙ　７１８　Ｎｉ基超合金の疲労特性におけるショットピーニング効果

• 竹内 悦男

  独立行政法人物質・材料研究機構

• 松岡 三郎

  独立行政法人物質・材料研究機構

• 沖田 耕一

  独立行政法人宇宙航空研究開発機構

• 堀 秀輔

  独立行政法人宇宙航空研究開発機構

書誌事項

タイトル別名

• Effect of Shot-Peening on Fatigue Properties for Alloy 718 Nickel-based Superalloy
• Alloy 718 Niキ チョウゴウキン ノ ヒロウ トクセイ ニ オケル ショットピーニング コウカ

抄録

Effect of shot-peening on fatigue properties for Alloy 718 nickel-based superalloy was investigated. Fatigue tests were conducted under rotating bending at a stress ratio of R=-1 and under uniaxial loading at R=-1 and 0.01. In addition, σ_max=σ_y tests where R ranges from 0.1 to 0.75 were carried out under uniaxial loading. Fatigue strength was higher for shot-peened (SP) specimens than for non shot-peened (NP) specimens. The increase in fatigue strength at 10⁷ cycles was 70% and 15-35% for rotating bending and uniaxial loading, respectively. In parallel with the increase in fatigue strength, the fracture type changed from the surfacetype for NP specimens to the internal type for SP specimens. A facet-like appearance was observed at the crack initiation sites for both the surface and internal type fractures.

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 71 (707), 1051-1057, 2005

  一般社団法人 日本機械学会

キーワード

• Alloy 718
• Fatigue
• Shot Peening
• Stress Ratio
• Internal Fracture
• Surface Fracture
• Facet

詳細情報

• CRID: 1390001204479695360
• NII論文ID: 110004999047
• NII書誌ID: AN0018742X
• DOI: 10.1299/kikaia.71.1051
• COI: 1:CAS:528:DC%2BD2MXhtVKhsLbK
• ISSN: 18848338
• ISSN: 03875008
• ISSN: http://id.crossref.org/issn/03875008
• NDL書誌ID: 7432489
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7432489
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/71/707/71_707_1051/_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