Influence of microalloying with rare earth metals and production technology of structural intermetallide alloy based on nickel aluminide on alloy properties

Resumo

The influence of rare earth metals, such as praseodymium, neodymium, and erbium, and the technology of smelting a nickel aluminide alloy based on “clean” raw materials and using 25, 50, and 75 wt % of waste is investigated. It is found that doping with neodymium and/or erbium in the smelting of structural intermetallic nickel-based alloy increases the heat strength at a temperature of 1200°C and heat resistance at the temperatures of 1100 and 1200°C for 100 h at a weight gain from 1 m². Introducing a different percentage of waste during the smelting the intermetallic alloy results in a slight decrease in the heat resistance but preserves the same level of values when 25, 50, or 75 wt % of waste is included.