Multiaxial Low Cycle Fatigue Life Evaluation of Nickel Base Single Crystal Superalloy Cruciform Specimen

• MATSUDA Noriaki

  Hitachi Eng. & Services Ltd.

• SAKANE Masao

  Dept. of Mech. Eng., Ritsumeikan Univ.

• HORI Tomomasa

  Dept. of Mech. Eng., Ritsumeikan Univ.

• NOSE Atsushi

  Dept. of Mech. Eng., Ritsumeikan Univ.

• YORIKAWA Morio

  Hitachi Eng. & Services Ltd.

• MASUNO Kouichi

  Hitachi Eng. & Services Ltd.

• ISOBE Nobuhiro

  Hitachi Res. Lab., Hitachi Ltd.

• YOSHINARI Akira

  Hitachi Res. Lab., Hitachi Ltd.

Bibliographic Information

Other Title

• Ni基単結晶超合金製十字型試験片による軸力－軸力組合せ負荷での多軸低サイクル疲労寿命評価
• Ni基単結晶超合金製十字型試験片による軸カー軸力組合せ負荷での多軸低サイクル疲労寿命評価
• Niキタンケッショウ チョウゴウキンセイ ジュウジガタ シケンヘン ニ ヨル ジク カージクリョク クミアワセ フカ デ ノ タジク テイサイクル ヒロウ ジュミョウ ヒョウカ

Abstract

This paper describes the multiaxial low cycle fatigue life of cruciform specimen of YH61 Ni base single crystal superalloy at high temperature. Biaxial tension-compression low cycle fatigue tests were performed using the cruciform specimen at 1173K under y-directional strain amplitude (ε_y) constant condition with varying x-directional strain amplitude (ε_x). Low cycle fatigue lives were influenced by the strain biaxiality and the maximum lives were obtained at ε_x/ε_y being equal to 0.5. The maximum principal strain and Mises equivalent strain ranges gave a large scatter in the correlation of the multiaxial low cycle fatigue lives. The principal stress and Mises equivalent stress ranges showed far better correlation than the strain ranges. Cracking mode was also discussed by observing the fracture surface at failure. Cracks propagated in the 45 degree direction to x direction at ε_x/ε_y = -1 test while those in the x direction in the other cases. Cracks were initiated at the life ratio less than 0.2 at Ni₃(Al+Ta) eutectic alloy part and propagated with cycles.

Journal

• Journal of the Society of Materials Science, Japan

  Journal of the Society of Materials Science, Japan 61 (8), 704-711, 2012

  The Society of Materials Science, Japan

Keywords

• Nickel-base superalloy
• Single crystal
• Multiaxial
• Low cycle fatigue
• High temperature

Details

• CRID: 1390282680421055616
• NII Article ID: 130002084915
• NII Book ID: AN00096175
• DOI: 10.2472/jsms.61.704
• COI: 1:CAS:528:DC%2BC38XhsVCrsrbM
• ISSN: 18807488
• ISSN: 05145163
• NDL BIB ID: 023943028
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023943028
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed