N06625 is a nickel-chromium alloy that is rich in alloying elements such as molybdenum and niobium, giving it excellent high-temperature strength and good corrosion resistance.
The main performance characteristics of this alloy include:
High-temperature strength: N06625 can still maintain good mechanical properties in high-temperature environments and is suitable for temperatures up to 980°C.
Corrosion resistance: The alloy shows strong resistance to a variety of corrosive media, especially acidic and alkaline environments.
Formability: During the manufacturing process, its plasticity is excellent, making it easy to process into parts of complex shapes.
Heat treatment process
The heat treatment process has an important influence on the microstructure and properties of N06625. Common heat treatment processes include solution treatment and aging treatment:
Solution treatment: Generally carried out at 980°C, followed by quenching to eliminate the alloy's solid solution strengthening phase and optimize its mechanical properties.
Aging treatment: Carried out in the range of 600-700°C to enhance the hardness and strength of the alloy and improve its stability at high temperatures.
Reasonable heat treatment process can improve the fatigue durability of N06625 and ensure its reliability in high temperature and corrosive environment.
How to improve fatigue life
Improving the fatigue life of N06625 is the key to extending the service life of the material. The following methods can effectively improve the fatigue life:
Optimize process parameters: During forging, welding and machining, reasonably select process parameters to reduce internal stress.
Surface treatment: Use surface treatment processes such as shot peening and polishing to enhance the surface strength of the material and improve fatigue resistance.
Stress relief treatment: Stress relief treatment is performed on welded and cast parts to avoid fatigue cracks caused by residual stress.
