A Short Review on the Processing of Nimonic Superalloys by Powder Metallurgy Route

Demand forth application of Nickel based Nimonic super-alloys is extensively used in various sectors like aerospace, marine, chemical, nuclear industries, and defence industries, where the use of high-temperature materials is required to survive at elevated temperatures. In this paper, various Ni-based alloy has been discussed along with their processing routes. Conventional methods like melting casting, and investment casting methods are used to develop Nimonic super alloys however these methods have certain limitations such as segregation, near net shape, and material loss during machining but to overcome these limitations the powder metallurgy method has been adopted. The four commercially available Ni-based Nimonic superalloys are Nimonic75, Nimonic80A, Nimonic 90, and Nimonic105, processed by powder metallurgy route has been discussed here. This review describes the physical and mechanical properties of heat treated Nimonic superalloys in various aspects of preparation and application.