Improvement of the mechanical properties in a nanocrystalline NiAl intermetallic alloy with Fe, Ga and Mo additions

Corrosion performance of NiAl intermetallic with Mo, Ga and Fe in neutral and alkaline media

“…Also, recent theoretical work has indicated promising results through grain refinements [8]. The incorporation of a second phase has also been reported by improvement in high and low temperature properties [9]. The sintering of nanocrystalline powders performed at low temperatures has been carried out in short times replacing the commercial Ni-base superalloys [10] through the additions of iron (Fe), molybdenum (Mo) and gallium (Ga).…”

Morphology and structure effect of Ti additive on the solid-state reaction between Ni and Al powders during mechanical alloying

“…However, the lack of ductility at room temperature and a poor strength at high temperatures prevent its use as a candidate for replacement of Ni-based super alloys. So, many efforts have been made to reduce the brittleness of NiAl intermetallic compounds that can be classified as changing the alloy sliding system [1], the refinement of grain ternary or higher order [2,3], and the incorporation or precipitation of a ductile phase [4]. It has been suggested in the literature [5] that fragile materials can develop some ductility by refining the grain below a critical size.…”

Partial martensitic transformation of nanocrystalline NiAl intermetallic during mechanical alloying

“…The NiAl intermetallic compound offers a combination of attractive properties such as high specific strength, high melting point, excellent oxidation resistance up to 1573 K and good thermal conductivity [1,2]. These attractive properties make the NiAl compound a potential candidate for structural applications.…”