Nimonic 75

Nimonic75 is an early development of 80Ni-20Cr solution-reinforced high-temperature alloy with simple chemical composition, satisfactory thermal strength and high plasticity below 800°C, and good resistance to oxidation, thermal fatigue, cold stamping and welding process performance. The alloy is single-phase austenite after solid solution treatment, and the organization is stable during use. It is mainly used for turbine engine combustion chamber parts working below 800°C and other high temperature parts requiring oxidation resistance below 1100°C but bearing little load.

Nimonic75 process performance. 1、The alloy has good malleable properties, forging heating temperature 1180℃, final forging 900℃. 2, the average size of the grain size of the alloy and the degree of deformation of the forging, the final forging temperature is closely related. 3, after heat treatment, parts surface oxidation skin can be blown sand or acid cleaning method to remove. Nimonic 75 melting and casting process. Electric arc furnace melting or electric arc furnace melting plus electroslag remelting or vacuum electric arc remelting, non-vacuum induction furnace plus electroslag melting or vacuum electric arc furnace remelting or vacuum duplex process. Nimonic 75 application profile and special requirements. The alloy has been tested for a long time in aero engines, mainly for combustion chamber and pressurized combustion chamber parts and parts such as magazine mounting edges.