INVESTIGATION OF MOLDING AND SINTERING PARAMETERS OF FEEDSTOCK PREPARED FROM Ti-6Al-4V ALLOY POWDER

SUBAŞI M., KARATAŞ Ç.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.31, sa.2, ss.473-483, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 2
  • Basım Tarihi: 2016
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.473-483
  • Anahtar Kelimeler: Ti-6Al-4V, powder injection molding, sintering, MECHANICAL-PROPERTIES, METAL, TITANIUM, MICROSTRUCTURES, OPTIMIZATION, COMPONENTS, BEHAVIOR
  • Gazi Üniversitesi Adresli: Evet

Özet

Having some properties like low density, high temperature resistance, corrosion resistance and excellent biocompatibility, has made titanium and its alloys to be used in many industrial and biomedical applications. As a new production process, Powder Injection Molding (PIM) refers to a combination of powder metallurgy and plastic injection molding technologies. PIM method offers several unique advantages in mass production of small and complex-shaped parts. In this study, the PIM optimal parameters of molding and sintering stages, for fabricating of Ti-6Al-4V alloy has been determined. To realize the molding and sintering parameters, Taguchi method of experimental design has been applied. As a result, Ti-6Al-4V feedstock studies exhibited flow rate of 20 cm3/s, injection pressure of 1100 bar, holding pressure of 60%, injection temperature of 140 degrees C, sintering temperature of 1250 degrees C, sintering dwell time of 1 hour, sintering heating rate of 1 degrees C/min, gas flow rate of 10 lit/min, as optimum parameters.