With the continuous development of industry, the demand for superalloys is increasing. As an important superalloy, NICR20Tial superalloy is widely used in aerospace, energy, chemical industry and other fields because of its excellent high temperature resistance and good mechanical properties. In this paper, NICR20Tial superalloy will be introduced in detail, including its composition, microstructure, properties, application and development prospects.
1. Composition and organizational structure.
NICR20Tial superalloy is mainly composed of nickel (Ni), chromium (Cr), titanium (Ti), aluminum (Al) and other elements, of which the nickel element content is high, about 50% to 60%, the chromium element content is about 20% to 25%, and the titanium and aluminum elements are about 1% to 2% and about 0., respectively5% to 1%. In addition, it also contains a certain amount of iron (Fe), cobalt (CO), silicon (Si), manganese (Mn), tungsten (W), molybdenum (Mo) and other elements.
The microstructure of NICR20Tial superalloy is composed of austenite matrix and intermetallic compounds, in which the austenite matrix is the main bearing phase and the intermetallic compounds play a strengthening role. In the preparation process of alloys, alloys with different microstructures can be obtained by adjusting the heat treatment process to meet the needs of different application scenarios.
Second, performance characteristics.
1.Excellent high-temperature performance: NICR20Tial superalloy has good creep resistance and high-temperature strength, and can work stably in high-temperature environments for a long time. It has a wide range of operating temperatures, can be used for a long time in environments above 600, and has good oxidation resistance and gas corrosion resistance.
2.Good mechanical properties: NICR20Tial superalloy has good mechanical properties at room temperature, such as tensile strength, yield strength and elongation. At the same time, the alloy also has good plasticity and toughness, which can be applied in environments that are subject to greater stress and impact.
3.Good processing performance: NICR20TITANIUM superalloy has a high melting point, but its casting performance, welding performance and cutting performance are good, and it is easy to process and manufacture.
Third, the field of application.
NICR20Tial superalloy is widely used in aerospace, energy, chemical industry and other fields. In the aerospace field, the alloy can be used to make aircraft engine parts, rocket engine parts and missile structural parts, etc.;In the energy field, it can be used to manufacture high-temperature furnace tubes, nuclear reactor parts and thermal equipment parts, etc.;In the chemical industry, it can be used to manufacture equipment components such as high-temperature reactors, heat exchangers and valves.
Fourth, development prospects.
With the continuous progress of science and technology and the increasing application demand, NICR20Tial superalloy, as an important high-temperature material, has broad development prospects. In the future, with the in-depth study of the composition and microstructure of the alloy, it is expected to further improve its performance and application range. At the same time, with the continuous strengthening of environmental awareness, the development of low-cost and low-pollution preparation technology will also become an important research direction in this field.