What is the processing of Inconel718 alloy?

Inconel718 alloy is a precipitation hardening nickel-chromium-iron alloy containing niobium and molybdenum. It has high strength, good toughness and corrosion resistance in high and low temperature environments below 700°C. Its state can be solid solution treatment or precipitation hardening state.

Inconel718 alloy hot working

The suitable hot working temperature of Inconel718 alloy is 1120-900℃, and the cooling method can be water quenching or other rapid cooling methods. After hot working, the alloy should be annealed in time to ensure the best performance. During thermal processing, the material should be heated to the upper limit of the processing temperature. In order to ensure plasticity during processing, the final processing temperature when the deformation reaches 20% shall not be lower than 960℃.

Cold working

Cold working should be carried out after solution treatment. The work hardening rate of Inconel718 alloy is higher than that of austenitic stainless steel. Therefore, the processing equipment should be adjusted accordingly, and the intermediate annealing process should be carried out during the cold working process.

Inconel718 alloy machining

The machining of Inconel718 needs to be carried out after solution treatment, and the work hardening of the material should be considered. Unlike austenitic stainless steel, Inconel718 is suitable for low surface cutting speeds.