N-155 (R30155) superalloy is an alloy material with excellent comprehensive properties, due to its special chemical composition and microstructure, it can maintain good stability and strength in high temperature environment. In this article, we will introduce the chemical composition, microstructure, performance characteristics and application fields of N-155 superalloy.
1. Chemical composition.
The chemical composition of N-155 superalloy is very complex, mainly composed of iron, nickel, chromium, cobalt, molybdenum, tungsten, niobium and other elements. Among them, the chromium content is high, which plays an important role in the corrosion resistance and oxidation resistance of the alloy. Nickel increases the strength and toughness of the alloy. The addition of cobalt and molybdenum makes the alloy have good high-temperature strength and creep properties. The addition of tungsten and niobium improves the fatigue resistance and heat resistance of the alloy. In addition to this, it also contains a certain amount of carbon, nitrogen, boron and other elements, which also have a great impact on the properties of the alloy.
2. Organizational structure.
The microstructure of N-155 superalloy is mainly composed of austenitic matrix with face-centered cubic lattice structure and different kinds of intermetallic compounds. During the solidification process of the alloy, a certain number of precipitated phases will be formed, and these precipitated phases will affect the mechanical properties and processing properties of the alloy. In addition, N-155 superalloy also contains a certain amount of ferrite, which makes the alloy have good corrosion resistance and high temperature strength.
3. Performance characteristics.
N-155 superalloy has a number of excellent performance characteristics. First of all, it has extremely high temperature strength and creep properties, and can maintain excellent mechanical properties for a long time in a high-temperature environment. Secondly, the alloy has good corrosion resistance and can be used in a variety of acidic and alkaline environments. In addition, N-155 superalloy has good cutting performance and can perform various cutting operations. At the same time, the alloy has good welding properties and forming properties, and can be processed and manufactured in various forms.
Fourth, the field of application.
Due to its excellent comprehensive properties, N-155 superalloy is widely used in aerospace, petrochemical, energy and power fields. In the aerospace field, it can be used to manufacture various high-temperature components such as turbine disks, blades, combustion chambers, etc. In the petrochemical field, it can be used to manufacture various high-temperature pipelines, valves, reactors and other equipment. In the field of energy and power, it can be used to manufacture various high-temperature furnace tubes, boiler parts and other equipment.
In conclusion, N-155 superalloy is an alloy material with excellent comprehensive properties, and its unique chemical composition and microstructure make it have many excellent performance characteristics. It has been widely used in aerospace, petrochemical, energy and power and other fields. In the future, with the continuous development of science and technology, N-155 superalloy will be used in more fields, bringing more convenience and benefits to human production and life.