Effect of plasma nitriding of a stop hole along the fatigue crack path on crack propagation

Şengül A. B.

Theoretical and Applied Fracture Mechanics, cilt.127, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 127
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.tafmec.2023.104050
  • Dergi Adı: Theoretical and Applied Fracture Mechanics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: FCG path, Stop hole, Plasma Nitriding, DIC
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Hayır

Özet

The effect of nitriding of the fastener hole along the Fatigue Crack Growth (FCG) path on FCG was investigated. A standard Compact Tension (CT) specimen made of AISI 4140 steel with a 5 mm diameter hole drilled on the FCG path was used. It was subjected to a plasma nitriding process. Crack growth was monitored using the digital imaging method. The results were compared with the paired sample t-test. As compared to the un-nitrided sample without a hole (control group), FCG lifetime was increased 1.5 times un-nitrided without a hole and nitrided with a hole samples. And 2.5 times the total FCG lifetime was observed in drilled un-nitrided samples. It was determined that nitriding treatment of the drilled samples eliminated the positive effect of the hole on FCG life.