An investigation of the relationship between heat treatment and microstructure in (TiAlV)N and (TiAl)N ceramic films

Totik Y., Efeoglu I., Gavgali M., Sadeler R.

MATERIALS CHARACTERIZATION, cilt.47, sa.1, ss.55-60, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 1
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s1044-5803(01)00152-8
  • Dergi Adı: MATERIALS CHARACTERIZATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.55-60
  • Atatürk Üniversitesi Adresli: Evet

Özet

(TiAl)N and (TiAlV)N films coated on M2 high-speed tool steel were heat-treated in an argon atmosphere at temperatures of 700 degreesC, 800 degreesC and 900 degreesC for 3 h. The structural and mechanical properties of the ceramic films were examined by microindentation hardness testing, X-ray diffraction (XRD) and scanning electron microscopy. Annealing at elevated temperatures led to a decrease in the hardness of the ceramic films. The magnitude of this hardness change became larger with increasing annealing temperature. Elevated temperature anneals also modified the distribution of elements in the ceramic films. XRD data show that phase transformations take place in the structure. These transformations resulted in a decrease in the hardness, residual stress and spacing between the planes of the film. The surface topography was not affected by the heat treatment. (C) 2001 Elsevier Science Inc. All rights reserved.