Investigation of Mechanical Properties of Fe-Doped Intermetallic NiAl

Last few decades intermetallic materials such as NiAl are mechanical and physical properties for high temperature practice. Especially high melting point, excellent oxidation resistance and high hardness properties draw the attention in that intermetallics. It is known that Ni-Al intermetallics are commonly used in various application fields with the addition of Fe, in particular as well as elements such as Ti, Cr, Mo and Co which are related to this group for improving properties thereof. It is especially determined that Fe additive provides positive results in terms of moderate intensity, high strenght and corrosion resistance in the produced intermetallics. Sintering process was used in this work, NiAl powder mixture and Fe powder were sintered at different temperatures. Scanning electron microscopy imaging, EDX line analysis tests performed respectively to sintering samples.

Anahtar Kelimeler:

Sinterleme, intermetalikler, toz

Fe Katkılı NiAl İntermetaliklerin Mekanik Özelliklerinin İncelenmesi

Son yıllarda NiAl gibi intermetalik malzemeler, yüksek sıcaklık uygulamalarında iyi mekanik ve fiziksel özellikler göstermektedir. Özellikle yüksek erime noktası, iyi oksidasyon direnci ve yüksek sertlik bu intermetaliklerin en dikkat çeken özellikleri arasındadır. NiAl intermetalikler, Fe katkılı malzemenin yanında Ti, Cr, Co ve Mo gibi malzemelerin katkısıyla çeşitli uygulamalarda kullanım alanına sahiptir. Özellikle Fe katkılı intermetalikler, yoğunluk, yüksek dayanım ve iyi korozyon direnci gibi özellikler sergilemektedir. Bu çalışmada NiAl toz karışımı ile Fe tozu farklı sinterleme sıcaklığında sinterlenmiştir. Sinterlenen numunelere sırasıyla SEM ve EDX analizleri gerçekleştirilmiştir.

Keywords:

Sintering, intermetallics, powder,

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