Structural and mechanical investigation of a TiAl2 based alloy: A combined theoretical and experimental study

Mermer E., Çinici H., Uğur G., Ünal R.

MATERIALS LETTERS, cilt.354, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 354
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.matlet.2023.135361
  • Dergi Adı: MATERIALS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Intermetallic alloys and compounds, Microstructure, Phase diagrams, ThermoCalc, TiAl2
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, Zr and Nb doped TiAl2 alloy (Ti-43Al-6Zr-2Nb (wt.%)) has been investigated with the support of thermodynamic simulation by the ThermoCalc software, followed by production with vacuum induction melting. Ti-43Al-6Zr-2Nb (wt.%) alloy is revealed as thermodynamically stable by ThermoCalc. Dendritic with lamellar phase mixtures microstructure of TiAl and TiAl2 has been obtained by X-Ray diffraction and scanning electron microscopy studies. The resultant phases match well with phase diagram of Ti-43Al-6Zr-2Nb (wt.%) alloy drawn with ThermoCalc software. TiAl2 brittle nature due to high hardness and elastic modulus have been diminished by Zr and Nb addition. Findings of this study contribute a valuable insight for development of multicomponent TiAl2 based alloys.