Structural surface characterization of ion nitrided AISI 4340 steel

ŞİRİN Ş. Y., KALUÇ E.

MATERIALS & DESIGN, cilt.36, ss.741-747, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.matdes.2011.12.025
  • Dergi Adı: MATERIALS & DESIGN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.741-747
  • Anahtar Kelimeler: Surface treatments, X-ray analysis, Selection for material properties, LOW-ALLOY STEEL, FATIGUE BEHAVIOR, PLASMA, MICROSTRUCTURE, CARBON, WEAR
  • Kocaeli Üniversitesi Adresli: Evet

Özet

AISI 4340 steel was ion nitrided using different time and temperature and the gathered properties were assessed by evaluating hardness profile, compound layer thickness, case depth and surface roughness by using microhardness tester, optical microscopy, surface profilometer and X-ray diffraction. It has been found that the thickness of the compound layer increases with increasing treatment time and temperature. The surface roughness, the surface hardness, the hardness profile, the case depth, the compound layer thickness, and phase content of the compound layer depend on nitriding parameters such as treatment time and temperature. Optimum ion nitriding parameters of component should be determined depending on the service conditions. For this reason, the effect of ion nitriding treatment parameters on structural properties of AISI 4340 steel was investigated. (C) 2011 Elsevier Ltd. All rights reserved.