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Low-doped heat-resistant nikalin АN2FMn

Жаропрочный экономнолегированный никалин АН2ЖМц
Nickel and iron in the alloy provides high technological properties of thin-walled castings (fallibility and resistance to hot cracking). These elements are completely included in the composition of the eutectic phases Al3Ni and Al9FeNi. Doping with manganese and zirconium provides the necessary strength characteristics. After heat treatment (without quenching), manganese and zirconium are present in the structure as a secondary phase precipitates Al6Mn (100-500 micrometers) and nanoparticles Al3Zr (20 nm) with l lattice L12. Designed for complex-shaped castings obtained by different casting methods (including the use of rapid prototyping technology). Alloy replaces the existing foundry alloys, to replace heat-resistant alloys such as AA224 and Ni-Resist. Fields of application: • Automotive; • Aircraft; • Oil and gas complex (valves, submersible pumps stage) Result is the creation of a new class of low-doped heat-resistant aluminum-alloy for complex-shaped castings that do not require a quenching treatment. Invented a method based on optimization of the structure of the eutectic (Al) + Al9FeNi and hardening due to the formation of dispersoids Al6Mn nanoparticles Al3Zr during annealing. Received a lot of shaped castings by casting into a mold and cold-resin, drafted technological recommendations. Advantages: • exception of quenching treatment process; • exemption of industrial areas from unnecessary equipment (such as hardening furnaces and quench tanks); • reduction of energy consumption and reduce emissions by reducing the work time of the furnaces; • reduction of the rejects occurring during quenching; • high mechanical properties not only at room temperature, but at elevated temperatures up to 300 -350 ° C; • High casting properties.

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