Effect of plasma nitrocarburizing on fatigue behaviour of AISI 1020 steel

KARAKAN M., YETİM A., ÇELİK A., ALSARAN A.

KOVOVE MATERIALY-METALLIC MATERIALS, cilt.46, sa.3, ss.173-177, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46 Sayı: 3
  • Basım Tarihi: 2008
  • Dergi Adı: KOVOVE MATERIALY-METALLIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.173-177
  • Atatürk Üniversitesi Adresli: Evet

Özet

AISI 1020 steel was plasma nitrocarburized under different process parameters regarding time (1, 4 and 12 h), temperature (500, 570 and 640 degrees C) and different CO2 ratio. The fatigue strength of plasma nitrocarburized AISI 1020 steel has been assessed by using a rotating bending fatigue machine and observed by scanning electron microscopy (SEM). In addition, the obtained results have been compared with the fatigue limits of plasma nitrided AISI 1020 steel. It has been found that plasma nitrocarburizing improves the fatigue strength with increased process times, but the fatigue strength decreases with growing CO2 ratios. Fatigue strength and fatigue limit depend on treatment temperature. Their maximum was found at 570 degrees C.