Novel high-temperature alloy and method for producing the same
A technology of superalloy and nickel-based superalloy, which is applied in the field of superalloy materials and can solve the problems of few civilian industries.
Inactive Publication Date: 2009-05-13
KUNMING INST OF PRECIOUS METALS +1
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In China, there are mainly Beijing Institute of Aeronautical Materials, Beijing Iron and Steel Research Institute, Institute of Metal Research, Chinese Academy of Sciences, Kunming Institute of Precio
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[0013] The chemical composition (weight %) of the novel nickel-based multi-element superalloy of the present invention is: 1.0~30.0Cr, 1.0~30.0Co, 1.0~10.0Mo, 1.0~5.0W, 1.0~5.0Al, 1.0~5.0Sm, 1.0 ~5.0Gd, 1.0~5.0Er, the balance is Ni.
[0014] A method for preparing a novel nickel-based multi-system superalloy material is characterized in that it includes the following process steps in sequence:
[0015] (1) Select high-temperature alloy raw materials with a purity >99.95%, design formula requirements according to the chemical composition of the alloy, and alloy it in a spray-forming vacuum intermediate frequency melting furnace. Vacuum degree: >1×10 -2 Pa;
[0016] (2) After the superheated temperature of the melt reaches 200°C~300°C, spray forming is carried out, the spray distance is 300mm~400mm, the atomizing gas pressure is 0.8MPa~2.0MPa, the diameter of the guide tube is Φ4mm~Φ5mm, the speed of the deposition disk 10rpm ~ 40rpm;
[0017] (3) The weight of the ingot is 3...
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The invention discloses a novel nickel base multi-component high-temperature alloy and a method for preparing the same. The nickel base multi-component high-temperature alloy comprises the following chemical components in weight percentage: 1.0 to 30.0 percent of Cr, 1.0 to 30.0 percent of Co, 1.0 to 10.0 percent of Mo, 1.0 to 5.0 percent of Al, 1.0 to 5.0 percent of Sm, 1.0 to 5.0 percent of Gd, 1.0 to 5.0 percent of Er, and the balance being Ni. The preparation method comprises the following steps: preparing the metallic elements such as nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), aluminum (Al), samarium (Sm), gadolinium (Gd), erbium (Er) according to the designed formulation proportion of the chemical compositions of the alloy; and directly preparing the metallic elements into NiCrCoMoWAlSmGdEr multi-component series alloy in an injection molding apparatus to obtain finished products with platy, rod-like or cylindrical alloy and the like. The alloy material has the characteristics of high strength, large hardness, corrosion resistance, high temperature resistance, small thermal expansion coefficient and the like, and can be used as a part material for pressure containers, reaction kettles, crucibles, leak boards, gears, pistons, connecting rods, molds and the like in industries such as chemical engineering, mine, machinery, metallurgy, glass, electromechanics.
Description
technical field [0001] The invention relates to a novel nickel-based multi-element high-temperature alloy and a preparation method thereof, belonging to high-temperature alloy materials. Background technique [0002] Due to the development of aviation, aerospace, military and other industries that require high-strength, high-temperature-resistant, and corrosion-resistant parts and components, nickel-based superalloys and iron-based superalloys are required to have: (1) sufficient chemical stability; (2) excellent Comprehensive high-temperature mechanical properties; (3) good manufacturing and processing performance; (4) appropriate economic feasibility. And with the expansion of the application field of nickel-based superalloys, issues such as heat resistance and corrosion resistance have become increasingly active research topics at home and abroad. Research on new multi-phase nickel-based superalloys in various countries also provides new research ideas and applicable res...
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Inventor 谢明宋兴诚陈永泰唐都作杨有才黄荣生刘满门徐胜利崔浩姚兴旺
Owner KUNMING INST OF PRECIOUS METALS