text: Despite its beneficial properties, NiAl generally suffers from two factors: very high brittleness at low temperatures (Al-based alloys these issues are generally addressed via the integration of other elements. Attempted elements can be broken into three groups depending on their influence of microstructure:
  * Elements that form ternary intermetallic phases such as Ti and Hf
  * Pseudobinary eutectic forming elements such as Cr
  * Elements with high solubility in NiAl such as Fe, Co and Cu
  Some of the more successful elements have been shown to be Fe, Co and Cr which drastically increase room temperature ductility as well as hot workability. This increase is due to the formation of γ phase which modifies the β phase grains. Alloying with Fe, Ga and Mo has also been shown to drastically improve room temperature ductility as well. Most recently, refracturing metals such as Cr, W and Mo have been added and resulted in not only increases in room temperature ductility but also increases in strength and fracture toughness at high temperatures. This is due to the formation of unique microstructures such as the eutectic alloy NiAlMo and α-Cr inclusions that contribute to solid solution hardening. It is even being shown that these complex alloys (NiAlCrMo) have the potential to be fabricated via additive manufacturing processes such as selective laser manufacturing, vastly increasing the potential applications for these alloys.