Improvement of mechanical properties of NiAl-Cr(Mo) alloy by Ti addition


Demirtas H., Gungor A.

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, cilt.9, ss.981-985, 2015 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 9
  • Basım Tarihi: 2015
  • Dergi Adı: OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
  • Sayfa Sayısı: ss.981-985

Özet

In this study, the influence of 4, 5 and 6 at.% Ti addition on the mechanical properties of NiAl-Cr(Mo) eutectic alloy was investigated. The microstructure of the alloys were determined by using XRD, SEM, EDX analyses and mechanical properties were investigated by micro and macro hardness measurements and compression tests at room temperature and 1000 degrees C. The results showed that Ni2AlTi Heusler phase precipitated in all Ti-added alloys and Ti addition inhibited eutectic cell formation by transforming lamellas Cr(Mo) phase into Cr(Mo) dendrites. In addition, hardness, room temperature and high temperature mechanical properties of NiAl-Cr(Mo) alloy improved significantly with the Ti addition.