3D積層造形したマルエージング鋼の疲労強度に及ぼすレーザピーニングの影響

• 土屋 詩織

  横浜国立大学

• 高橋 宏治

  横浜国立大学

書誌事項

タイトル別名

• Influence of Laser Peening on the Fatigue Strength of 3D Additive Manufactured Maraging Steel
• 3D セキソウ ゾウケイ シタ マルエージングコウ ノ ヒロウ キョウド ニ オヨボス レーザピーニング ノ エイキョウ

抄録

The purpose of this study is to investigate the effectiveness of laser peening (LP) on the fatigue strength of 3D additive manufactured maraging steel. First, LP was performed under several conditions and the optimum condition for improving fatigue strength were determined. Compressive residual stresses of 1100 MPa could be introduced on the surface by LP under the optimum condition. Then, bending fatigue tests were conducted using the two types of specimens; one with laser peened specimens under the optimal conditions (LP specimen) and the other without LP (Non-LP specimen). As a result, it was found that the fatigue strength of the LP specimen was about 43% higher than that of the Non-LP specimen. This result indicates that the introduction of compressive residual stress by LP improves the fatigue strength of 3D additive manufactured maraging steels. In addition, the fracture surfaces of specimens were observed and the fracture mechanism was investigated.

収録刊行物

• ばね論文集

  ばね論文集 2021 (66), 7-12, 2021-03-31

  日本ばね学会

キーワード

• Maraging Steel
• Selective Laser Melting
• Laser peening
• Fatigue strength
• Residual stress

詳細情報

• CRID: 1390008089767203584
• NII論文ID: 130008095315
• NII書誌ID: AN00205485
• DOI: 10.5346/trbane.2021.7
• ISSN: 13481479
• ISSN: 03856917
• NDL書誌ID: 031570995
• Web Site: http://id.ndl.go.jp/bib/031570995
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031570995
• Web Site: https://www.jstage.jst.go.jp/article/trbane/2021/66/2021_7/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可