Comparison of microstructure and tribological behaviour of plasma nitrided and nitrocarburized AISI 4140 steel

Karakan M., YETIM A. F., Celik A.

KOVOVE MATERIALY-METALLIC MATERIALS, cilt.44, sa.3, ss.139-144, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 3
  • Basım Tarihi: 2006
  • Dergi Adı: KOVOVE MATERIALY-METALLIC MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.139-144
  • Atatürk Üniversitesi Adresli: Evet

Özet

The structural and tribological properties of plasma nitrided and nitrocarburized AISI 4140 steel were characterized using X-Ray diffraction, SEM, microhardness tester and pin-on-disc tribotester. It was observed that case depth and surface hardness obtained in the plasma nitriding were higher than nitrocarburizing. However, it was found that the plasma nitrocarburized specimens showed high surface roughness and lower wear rate because of e phase present at the outer surface in nitrocarburizing treatments. The lowest wear rate was obtained after austenitic plasma nitrocarburizing.