What Is The Heat Treatment Process Of GH4090?

What is the heat treatment process of GH4090?

What is the heat treatment process of GH4090?

The heat treatment process of GH4090 includes solution treatment and aging treatment.

First of all, as a high-temperature alloy, the heat treatment process of GH4090 needs to be carried out in strict accordance with material technical standards. In the solution treated state, the alloy has good machining properties. In addition, after aging treatment, its performance can be maintained by using hard tools and slow machining at specified feed rates.

Second, the specific heat treatment regime involves heating the material to a certain temperature, holding it for a period of time, and then cooling it down in a specific cooling manner. For example, for GH90 cold-drawn steel bars, solution treatment at 1080°C ± 10°C is first performed. After a certain period of heat preservation, air cooling or water cooling can be selected. Then carry out aging treatment at 750℃±10℃ for 4 hours, and finally air cooling.

Finally, this heat treatment process ensures that GH4090 can maintain high tensile strength and creep resistance at use temperatures up to 920°C, while also having good oxidation and corrosion resistance. These characteristics make GH4090 very suitable for manufacturing key components such as turbine disks, blades and high-temperature fasteners of aerospace turbine engines.