The base alloy of molybdenum
(57) Abstract:The invention relates to alloys of molybdenum, intended for use as a structural material. The alloy contains, by weight. % : zirconium 0.3 to 1.5, carbon, 0.1 to 0.2, Ni 0.2 and 0.3, niobium 0,5 - 1,0, bored vanadium 0.1 to 0.3, molybdenum else. The properties of the alloy as follows: tensile strength 92-94 kg/mm2yield strength 60-64 kg/mm2. table 1. The invention relates to the metallurgy of alloys of molybdenum, used as materials in the construction, working in conditions of high temperatures and cyclic loads.Famous-based alloy of molybdenum containing zirconium and other ingredients (1).Famous-based alloy of molybdenum, containing the following ingredients, by weight. % : zirconium 0.3 to 1.5; the carbon of 0.045 to 0.15; Nickel of 0.01-0.1; molybdenum - rest (2).The tensile strength of this alloy is 66-88 kg/m2; yield strength - 38-58 kg/mm2that in the known composition of the alloy is raised can not be.The aim of the invention is the enhancement of the mechanical properties of the alloy.The aim is achieved in that in the composition of the alloy containing zirconium, carbon, Nickel, molybdenum, dered 0.1 to 0.2; Nickel 0,2-0,3; niobium 0,5-1,0; bored vanadium 0.1 to 0.3; molybdenum - rest.The table below shows the approximate composition of the alloy.It is expected that the tensile strength of the proposed alloy is kg/mm2: 1 composition 94; 2 composition 94; 3 of part 92. The yield strength is kg/mm2: 1 composition 62; 2 composition 64; 3 of part 60. Is also expected to improve the heat resistance and the wear resistance of articles made of alloy.Annealing is useful to 170050aboutC. The BASE ALLOY of MOLYBDENUM containing zirconium, carbon and Nickel, characterized in that it further comprises niobium and berid vanadium in the following ratio, wt. % :
Zirconium 0,3 - 1,5
Carbon 0,1 - 0,2
Nickel 0,2 - 0,3
Niobium 0,5 - 1,0
Bored vanadium 0.1 to 0.3
FIELD: powder metallurgy.
SUBSTANCE: parts of devices protecting against radioactive emission or electric contacts are proposed to be manufactured from tungsten/copper pseudoalloy. Tungsten powder is mixed with binder containing 0.5-1.5% colophony and 0.05-0.15% ammonium formate or citrate. Resulting mixture is compacted and resulting porous blanc is brought into contact with copper. The total is thermally treated by gradually raising temperature: first in vacuum to remove binder and to melt copper and then in argon atmosphere to 1360-1410оС.
EFFECT: increased wettability and uniformity of impregnation, and eliminated explosive risk due to excluded use of hydrogen.
3 cl, 1 tbl, 10 ex
FIELD: metallurgy, in particular molybdenum alloys of formula Mo-Si-B of improved oxidation resistance doped by iron, nickel, cobalt, copper or mixture thereof.
SUBSTANCE: invention relates to molybdenum-based alloy and its variants. Molybdenum alloy containing silicium and boron in disclosed, wherein said alloy comprises molybdenum with space-centered cubic lattice and intermetallic phases, as well as one from element compositions selected on the base of points on the next structural diagrams: metal alloy-Si 1.0 mass%-B 0.5 mass %; metal alloy-Si 1.0 mass %-B 4.0 mass %; metal alloy-Si 4.5 mass%-B 0.5 mass %; and metal alloy-Si 4.5 mass %-B 4.0 mass %. Said metal alloy contains molybdenum as the main component and additionally at least one element from group Fe, Ni, Co, Cu in amount of (mass %): Fe 0.01-2.0; Ni 0.01-2.0; Co 0.01-2.0; Cu 0.01-2.0. In another embodiment alloy composition is determined according to the next structural diagrams: Mo-Si 1.0 mass %-B 0.5 mass %; Mo-Si 1.0 mass %-B 4.0 mass %; Mo-Si 4.5 mass %-B 0.5 mass %; and Mo-Si 4.5 mass %-B 4.0 mass %. In additionally alloy contains 0.01-2.0 of at least one element from Fe, Ni, Co, Cu or mixture thereof. Claimed alloys have oxidation resistance at 12000C or above.
EFFECT: molybdenum-based alloys with high oxidation resistance.
3 cl, 3 dwg, 1 tbl, 1 ex
FIELD: mechanical engineering; methods of manufacture of the plates of the molybdenum alloy "ЦМ2А" used for the press forming.
SUBSTANCE: the invention is pertaining to the field of mechanical engineering and may be used at manufacture of the details of the electro-vacuum production (EVP) made out of the molybdenum alloy plates, in particular, of "ЦМ2А" brand by the press forming. The method provides for realization of the control over their mechanical properties during manufacture process, chipping of the samples, the vacuum annealing for removal of the strains caused by shipping. At that the annealing is fulfilled at the temperature of 650°С, and the control over the mechanical properties of the "ЦМ2А" plates is fulfilled by the random inspection of the samples hardness before and after the vacuum annealing and confirm preservation of the mechanical properties defined by the specification for the "ЦМ2А" plates by the calculations in compliance with the set dependences:δt =-174 + 3.745·HV, δ = 37.456 - 0.0848·HV, whereδt - the temporary resistance, n/mm2, δ - the relative elongation, %, HV - Vickers hardness (HV10). The technical result of the invention is conservation of the mechanical properties of the metallurgists delivered metal - the "ЦМ2А" plates till the moment of the press forming - draw, the possibility of stabilization and optimization of the production process for the metallurgists and the customers of the plates, the increased output of the suitable plates at the press forming, saving of the deficient metal, the increased reliability of the articles of the electro-vacuum production.
EFFECT: the invention ensures preservation of the metallurgists delivered metal mechanical properties till the moment of the press forming and draw, the possibility of stabilization and optimization of the production process for the metallurgists and the customers of the plates, the increased output of the suitable plates at the press forming, saving of the deficient metal, the increased reliability of the articles of the electro-vacuum production.
FIELD: manufacture of die tools for polymers.
SUBSTANCE: proposed alloy contains the following constituents, mass-%: molybdenum, 40.0-50.0; silicon, 0.3-0.5; iron, 5.0-10.0; manganese, 5.0-10.0; copper, 1.0-2.0; chromium, 5.0-10.0; niobium, 1.0-2.0; aluminum, 0.1-0.2; magnesium, 0.01-0.02; titanium, 0.1-0.2; zirconium, 0.1-0.2; boron, 0.3-0.5; carbon, 1.8-2.2; the remainder being nickel.
EFFECT: increased service life and improved quality of parts made from this alloy.
FIELD: powder metallurgy; composite materials for metal-ceramic seals.
SUBSTANCE: charge for composite material contains the following constituents, mass-%: molybdenum, 65-70; cobalt, 0.2-0.4; boron, 0.1-0.3; nickel, 0.2-0.4; sodium tetraborate, 0.2-0.4; the remainder being copper.
EFFECT: enhanced ductility of material.
1 tbl, 1 ex
FIELD: metallurgy, alloys.
SUBSTANCE: invention proposes molybdenum-base alloy of the following composition, wt.-%: zirconium, 0.8-1.2; carbon, 0.08-0.12; nickel, 0.8-1.2; aluminum, 0.1-0.2; hafnium, 0.4-0.8; nitrogen, 0.02-0.04; titanium, 0.1-0.2, and molybdenum, the balance. Proposed alloy shows the enhanced strength. Alloy is used in making critical section insertions, jets, articles for rockets and reactors, equipment and tools for metal working industry, articles for petroleum and glass industry, articles in radio engineering and electronic engineering.
EFFECT: improved and valuable properties of alloy.
FIELD: metallurgy, alloys.
SUBSTANCE: invention proposes alloy of the following composition, wt.-%: boron, 0.01-0.03; titanium, 0.3-0.5; nickel, 3-4; cobalt, 3-4; iron, 0.1-0.3, and molybdenum, the balance. Invention provides weldability of alloy. Proposed alloy is used in power machine engineering.
EFFECT: improved and valuable properties of alloy.
FIELD: manufacture of thermoemitters for surface ionization detectors and quantitative determination of content of organic compounds, such as amines, hydrazine and their derivatives.
SUBSTANCE: molybdenum-based mono-crystalline alloy contains iridium in the amount of 0.05-0.15 mass-% and ruthenium in the amount of 1.0-10.0 mass-%.
EFFECT: enhanced ionizing capacity and increased service life of thermoemitter.
SUBSTANCE: invention proposes a master alloy of the following composition, wt.-%; molybdenum, 30.0-40.0; vanadium, 5.0-10.0; chrome, 5.0-10.0; tungsten, 5.0-10.0; niobium, 5.0-10.0; zirconium, 10.0-15.0, and aluminum, the balance. Invention provides enhancing titanium-base alloys. Proposed master alloy is used in production of titanium-base alloys.
EFFECT: improved and valuable property of alloy.
SUBSTANCE: alloy is used for fabricating of parts for process equipment at production of plastic. Alloy contains, wt %: molybdenum 45.0-55.0; manganese 5.0-10.0; chromium 15.0-20.0; boron 0.5-1.0; silicon 0.1-0.2; zirconium 0.1-0.2; titanium 0.5-1.0; nitrogen 0.1-0.2; nickel - the rest.
EFFECT: upgraded hardness of alloy.