Structure, Chemical Composition, and Phase Composition of Intermetallic Alloy VKNA-1V After High-Temperature Heat Treatment and Process Heating

Applications of Ni3Al Based Intermetallic Alloys—Current Stage and Potential Perceptivities

“…Investigations and tests are now being conducted on a newly developed Ni 3 Al-based alloys, e.g.,: IC6CX (modified IC6), IC10 and VKNA’s which can be used as materials for advanced aeroengine fan with a service temperature up to 1373 K [41,55,59,64,66,67,68,69,70,71,72,73,74]. As reported in [55,66,73,74] an investigation on replacement of commercially produced nickel alloys such as GS6U, GS26 or ZhS6U with the VKNA-4U are still lasting. An introduction of this Ni 3 Al intermetallic alloy can increase a maximum operation temperature on rotor blades and nozzle guide vane in turbine engines by 50–100 °C, leading to approximately 10% mass reduction and an improvement of heat-resistance.…”

“…Actually, aforementioned VKNA’s alloys are tested in prototype PD-14 engine—a next generation turbofan engine which may become one of the alternative power source for the Ilyushin Il-76 and Irkut MS-21 twin-jet passenger aircraft [55,74,75,76,77] (Figure 7). …”

“…Due to a special arrangement of particular elements in a crucible, this process uses a heat generated during the exothermic reaction to melt all constituents in a very short time. Moreover, the Exo-Melt process is also beneficial in terms of production costs, giving approximately 50% saving of both time and energy [ 9 , 10 , 54 , 55 , 56 , 60 , 61 ]. The Exo-Melt process is employed for melting of nickel aluminides in, e.g.,: Alloy Engineering and Casting Company in Champaign, Illinois; United Defense in Anniston, Alabama; The BiMac Corporation in Dayton, Ohio; and Sandusky International in Sandusky, Ohio.…”

“…The Ni 3 Al based alloys are still regarded as candidates for advanced high temperature structural materials in aerospace applications, e.g., turbine engine components. Investigations and tests are now being conducted on a newly developed Ni 3 Al-based alloys, e.g.,: IC6CX (modified IC6), IC10 and VKNA’s which can be used as materials for advanced aeroengine fan with a service temperature up to 1373 K [ 41 , 55 , 59 , 64 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ]. As reported in [ 55 , 66 , 73 , 74 ] an investigation on replacement of commercially produced nickel alloys such as GS6U, GS26 or ZhS6U with the VKNA-4U are still lasting.…”

Comparative Study of Selective Laser Melting and Direct Laser Metal Deposition of Ni₃Al Intermetallic Alloy

“…Recently, Bazyleva et al studied the casting of nickel aluminides and the properties after the heat treatment [12]. Cao et al investigate the spark plasma sintering of Ni 3 Al and the oxidation behaviour [13].…”