GH131 alloy is mainly composed of elements such as nickel, chromium, cobalt, molybdenum, titanium, aluminum, and tungsten, and its typical chemical composition is as follows:
Nickel (Ni): Approximately 40-50% of the alloy, nickel is one of the main components of the alloy, providing excellent corrosion resistance and high temperature performance.
Chromium (CR): Approximately 21-23% of the alloy, chromium provides the corrosion resistance of the alloy and improves the resistance to oxidation and high temperatures.
Cobalt (CO): Approximately 10-12% of the alloy, cobalt provides the high-temperature strength and creep resistance of the alloy.
Molybdenum (Mo): Approximately 8-10% of the alloy, molybdenum provides the creep resistance and high-temperature strength of the alloy.
Titanium (Ti): Accounts for about 2-3% of the alloy, titanium can improve the creep resistance and high-temperature strength of the alloy.
Aluminium (AL): Approximately 2-3% of the alloy, aluminum provides the alloy's resistance to high-temperature oxidation and corrosion.
Tungsten (W): Approximately 05-1%, tungsten provides the high temperature strength and creep resistance of the alloy.
Mechanical properties: 1High temperature strength: It can maintain high strength and hardness at high temperatures, so that it will not be deformed easily or fatigued when working in high temperature environments, and has good lasting performance.
2.Oxidation resistance: It has good oxidation resistance, can work stably in an oxidation atmosphere for a long time, is not easy to produce an oxide layer, and maintains the strength and durability of the material.
3.Creep resistance: It has good resistance to creep at high temperatures, which can reduce the deformation and damage caused by continuous loading of materials at high temperatures.
4.Tensile resistance: It has good tensile resistance at room temperature and high temperature, and has high yield strength and tensile strength.
Heat treatment method:
1.Solution annealing: Heating to an appropriate temperature (usually 1150 -1250), holding for a period of time and then cooling rapidly, the purpose is to dissolve the supersaturated solute in the alloy and fill the precipitate, so that the alloy can obtain the best microstructure, improve its strength and toughness.
2.Cold hot working: After solution treatment, the alloy can be further improved by cold or hot deformation (such as extrusion, drawing, forging, etc.). Cold deformation (usually at room temperature) increases the strength and hardness of the alloy, while hot deformation (at high temperatures) improves the plasticity and toughness of the alloy.
3.Quenching: After solution treatment, quenching is sometimes required to further improve its mechanical properties. The quenching method can be selected according to the specific requirements, and the methods of water quenching, oil quenching or gas quenching are generally used.
4.Aging: After the solution and quenching treatment are completed, aging treatment can be carried out, that is, the material is heated to the appropriate temperature and kept stable for a certain period of time to promote the formation of precipitates and enhance the strength of the alloy.
Common Uses:1Aerospace field: It is often used in the manufacture of high-temperature parts such as aero engines, turbines, and gas turbines, such as blades, bearings, nozzles, etc., which have the characteristics of high temperature resistance, corrosion resistance and high strength, and can work stably in extreme environments.
2.Energy: It is also widely used in the energy field, such as petroleum, chemical, nuclear energy and other fields of high-temperature equipment and pipeline systems, which can withstand the erosion of high temperature, high pressure and corrosive media to ensure the stable operation of the equipment.
3.*It can be used in the manufacture of auto parts, such as turbochargers, exhaust system parts, etc., to improve the performance and efficiency of the engine.
4.Medical devices: It can also be used to manufacture medical devices, such as artificial joints, implantable devices, etc., with excellent biocompatibility and corrosion resistance.
5.Other fields: It can also be used in high-temperature heating equipment, chemical reactors, ship parts and other fields to meet the requirements of high temperature, corrosion and other harsh working conditions.
In general, GH131 alloy has important application value in many fields due to its excellent high-temperature strength, good corrosion resistance and excellent mechanical properties, and provides a reliable material choice for various industries.