An iron-base, fine-grained, martensitic stainless steel alloy is disclosed. The alloy is essentially free of delta ferrite and provides very high hardness and good corrosion resistance. The alloy consists essentially of the following composition in weight percent. The balance of the alloy is iron and the usual impurities. A composite article of manufacture is also disclosed that includes a case portion formed of the foregoing alloy.
A precipitation hardenable, martensitic stainless steel is disclosed. The alloy has the following broad composition in weight percent. Ni 10.5-12.5 Co 1.0-6.0 Mo 1.0-4.0 Ti 1.5-2.0 Cr 8.5-11.5 Al Up to 0.5 Mn 1.0 max. Si 0.75 max. B 0.01 max. The balance of the alloy is iron and the usual impurities found in commercial grades of precipitation hardenable martensitic stainless steels as known to those skilled in the state of the art in melting practice for such steels. A method of making parts from the alloy and an article of manufacture made from the alloy are also described.
A nickel base superalloy powder for additive manufacturing applications is disclosed. The alloy powder has the following broad weight percent composition: C 0-0.1 Mn 0.5 max. Si 0-0.03 Cr 4-16 Fe 0-1.5 Mo 0-6 W 0-8 Co 0-15 Ti 0-2 A1 0.5-5.5 Nb 0-6 Ta 7.5-14.5 Hf 0-2.0 Zr 0-0.1 Re 0-6 Ru 0-3 B 0-0.03 The balance of the alloy is at least 50% nickel and the usual impurities. An article of manufacture made from the alloy is also disclosed.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
4.
A METHOD OF MAKING A MULTI-MATERIAL SEGMENTED STATOR FOR A ROTATING ELECTRIC MACHINE AND A STATOR MADE BY SAID METHOD
A method of making a stator for a rotating electrical machine in which a tooth segment from a high saturation induction material and a yoke segment from a silicon steel material. The tooth segment is bond to yoke segment, thereby producing a stator with at least two magnetic saturations.
H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
A soft magnetic alloy having a good combination of formability and magnetic properties is disclosed. The alloy has the formula Fe100-a-b-c-d-e-fSiaMbLcM'dM"eRf wherein M is Cr and/or Mo; L is Co and/or Ni; M' is one or more of Al, Mn, Cu, Ge, Ga; M" is one or more of Ti, V, Hf, Nb, W; and R is one or more of B, Zr, Mg, P, Ce. The elements Si, M, L, M', M", and R have the following ranges in weight percent: Si 4-7 M 0.1-7 L 0.1-10 M' up to 7 M" up to 7 R up to 1 The balance of the alloy is iron and usual impurities. A thin-gauge article made from the alloy and a method of making the thin-gauge article are also disclosed.
A multi-principal element, corrosion resistant alloy is disclosed. The alloy has the following composition in weight percent: Co about 13 to about 28 Ni about 13 to about 28 Fe+Mn about 13 to about 28 Cr about 13 to about 37 Mo about 8 to about 28 N about 0.10 to about 1.00. The alloy also includes the usual impurities found in corrosion resistant alloys intended for the same or similar use. In addition, one or both of W and V may be substituted for some or all of the Mo. The alloy provides a solid solution that is substantially all FCC phase, but may include minor amounts of secondary phases that do not adversely affect the corrosion resistance and mechanical properties provided by the alloy.
An Fe-base, soft magnetic alloy is disclosed. The alloy has the general formula Fe100-a-b-c-d-x-y MaM'bM"cM"'d Px Mny where M is Co and/or Ni, M' is one or more of Zr, Nb, Cr, Mo, Hf, Sc, Ti, V, W, and Ta, M" is one or more of B, C, Si, and Al, and M'" is selected from the group consisting of Cu, Pt, Ir, Zn, Au, and Ag. The subscripts a, b, c, d, x, and y represent the atomic proportions of the elements and have the following atomic percent ranges: 0 ≤ a ≤ 10, 0 ≤ b ≤ 7, 5 ≤ c ≤ 20, 0 ≤ d ≤ 5, 0.1 ≤ x ≤ 15, and 0.1 ≤ y ≤ 5. The balance of the alloy is iron and usual impurities. Alloy powder, a magnetic article made therefrom, and an amorphous metal article made from the alloy are also disclosed.
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 1/20 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
H01F 1/147 - Alloys characterised by their composition
9.
REDUCING ORDERED GROWTH IN SOFT-MAGNETIC FE-CO ALLOYS
A process for making an article of manufacture from elongated strip of a soft-magnetic Fe-Co alloy is disclosed. The process includes a prefabrication annealing step in which the elongated strip is annealed before it is fabricated into parts. The prefabrication annealing step is carried out at a temperature that is greater than the ordering temperature of the alloy. The process further includes the step of cooling the alloy from the annealing temperature at a rate that is selected to cause substantial transformation of the disordered phase of the soft- magnetic Fe-Co alloy to an ordered phase thereof. An article of manufacture made by using the process is also disclosed.
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C22C 38/10 - Ferrous alloys, e.g. steel alloys containing cobalt
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
H01F 1/147 - Alloys characterised by their composition
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
H01F 3/02 - Cores, yokes or armatures made from sheets
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
10.
HIGH TEMPERATURE, DAMAGE TOLERANT SUPERALLOY, AN ARTICLE OF MANUFACTURE MADE FROM THE ALLOY, AND PROCESS FOR MAKING THE ALLOY
A nickel-base alloy is disclosed that has the following weight percent composition. C about 0.005 to about 0.06 Cr about 13 to about 17 Fe about 4 to about 20 Mo about 3 to about 9 W up to about 8 Co up to about 12 Al about 1 to about 3 Ti about 0.6 to about 3 Nb up to about 5.5 B about 0.001 to about 0.012 Mg about 0.0010 to about 0.0020 Zr about 0.01 to about 0.08 Si up to about 0.7 P up to about 0.05 and the balance is nickel, usual impurities, and minor amounts of other elements as residuals from alloying additions during melting,. The alloy provides a combination of high strength, good creep resistance, and good resistance to crack growth. A method of heat treating a nickel base superalloy to improve the tensile ductility of the alloy is also disclosed. An article of manufacture made from the nickel base superalloy described herein is also disclosed.
The United States Of America, as represented by the Secretary Of The Navy (USA)
Inventor
Sinfield, Matthew
Farren, Jeffrey
Wong, Richard
Martin, William J.
Smith, Richard H.
Para, Shane
Heilmann, James E.
Novotny, Paul M.
Ray, Patrick C.
Deantonio, Dan
Stravinskas, Joe
Abstract
An exemplary welding consumable according to the invention is provided and includes up to about 0.13 wt % carbon, about 0.3 wt % to about 1.4 wt % manganese, about 7.25 wt % to about 11.5 wt % nickel, about 0.6 wt % to about 1.2 wt % molybdenum, about 0.2 wt % to about 0.7 wt % silicon, up to about 0.3 wt % vanadium, up to about 0.05 wt % titanium, up to about 0.08 wt % zirconium, up to about 2.0 wt % chromium, and a balance of iron and incidental impurities.
B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
B23K 35/02 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
C21D 9/50 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for welded joints
C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
12.
STEEL ALLOY WITH HIGH STRENGTH, HIGH IMPACT TOUGHNESS AND EXCELLENT FATIGUE LIFE FOR MUD MOTOR SHAFT APPLICATIONS
A steel alloy is disclosed that provides a unique combination of strength, toughness, and fatigue life. The steel alloy has the following composition in weight percent. C about 0.15 to about 0.30 Mn about 1.7 to about 2.3 Si about 0.7 to about 1.1 Cr about 1.85 to about 2.35 Ni about 0.5 to about 0.9 MO+1/2W about 0.1 to about 0.3 Cu about 0.3 to about 0.7 V+5/9xNb about 0.2 to about 0.5 The balance of the alloy is iron, usual impurities, and residual amounts of other elements added during melting for deoxidizing and/or desulfurizing the alloy. A hardened and tempered steel article made from the alloy is also disclosed.
37 - Construction and mining; installation and repair services
Goods & Services
(1) Oil and gas field down-hole equipment tooling, namely, stabilizers, drill collars, subs, hole openers and bottom-hole assembly tools (1) Repair and maintenance of down-hole equipment tooling and assemblies used in the drilling of oil and gas wells; leasing and rental of oil well drilling and production tools, namely, drill collars, stabilizers, subs, hole openers, float valves, baffle plates, sleeves, and drill pipe screens
A method of manufacturing a ferrous alloy article is disclosed and includes the steps of melting a ferrous alloy composition into a liquid, atomizing and solidifying of the liquid into powder particles, outgassing to remove oxygen from the surface of the powder particles, and consolidating the powder particles into a monolithic article.
B22F 3/17 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor by forging
A ferrous alloy is provided for coining. The ferrous alloy includes a composition of: 4.00- 10.80 wt % of chromium (Cr), 8.00-25.00 wt % of nickel (Ni), 3.00-6.00 wt % of copper (Cu), and a balance of iron (Fe) and incidental impurities.
A ferrous alloy is provided for coining The ferrous alloy includes a composition of: 4.00-10.80 wt % of chromium (Cr), 8.00-25.00 wt % of nickel (Ni), 3.00-6.00 wt % of copper (Cu), and a balance of iron (Fe) and incidental impurities.
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
B21B 1/02 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21D 19/00 - Flanging or other edge treatment, e.g. of tubes
B21D 28/02 - Punching blanks or articles with or without obtaining scrapNotching
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
A precipitation hardenable, martensitic stainless steel alloy is disclosed. The alloy has the following composition in weight percent, about C 0.03 max Mn 1.0 max Si 0.75 max P 0.040 max s 0.020 max Cr 10 - 13 Ni 10.5 - 11.6 Mo 0.25 - 1.5 Co 0.5-1.5 Cu 0.75 max Ti 1.5 - 1.8 Al 0.3 - 0.8 Nb 0.3 - 0.8 B 0.010 max N 0.030 max The balance is iron and usual impurities. The disclosed alloy provides a unique combination of corrosion resistance, strength, and toughness.
A quench and temper steel alloy is disclosed having the following composition in weight percent. C 0.2-0.5 Mn 0.1-1.0 Si 0.1-1.2 Cr 9-14.5 Ni 3.0-5.5 Mo 1-2 Cu 0-1.0 Co 1-4 W 0.2 max. V 0.1-1.0 Ti up to 0.5 Nb 0-0.5 Ta 0-0.5 Al 0-0.25 Ce 0-0.01 La 0-0.01 The balance of the alloy is iron and the usual impurities found in similar grades of quench and temper steels intended for similar use or service, including not more than 0.01% phosphorus, not more than 0.010%) sulfur, and not more than 0.10% nitrogen. A quenched and tempered steel article made from this alloy is also disclosed. The steel article is characterized by having a tensile strength of at least 290 ksi and a fracture toughness (Klc) of at least 65 ksi. The steel article is further characterized by having good resistance to general corrosion as determined by the salt spray test (ASTM Bl 17) and good resistance to pitting corrosion as determined by the cyclic potentiodynamic polarization method (ASTM G61 Modified).
A high strength, high toughness steel alloy is disclosed having the following weight percent composition. Element C 0.30-0.55 Mn 0.6-1.75 Si 0.9-2.8 Cr 0.6-2.5 Ni 2.70-7.0 Mo + ½ W 0.25-1.3 Cu 0.30-1.25 Co 0.01 max. V + (5/9) x Nb 0.10-1.0 Ti 0.01 max. Al 0.015 max. Ca 0.005 max. The alloy further includes a grain refining element selected from the group consisting of 0.0001- 0.01% Mg, 0.001-0.025% Y, and a combination thereof. The balance of the alloy is iron and usual impurities. Also disclosed is a hardened and tempered steel article having very high strength and fracture toughness and formed from the alloy set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A high strength, high toughness steel alloy is disclosed. The alloy has the following weight percent composition. Element C 0.30-0.47 Mn 0.8-1.3 Si 1.5-2.5 Cr 1.5-2.5 Ni 3.0-5.0 Mo + ½ W 0.7-0.9 Cu 0.70-0.90 Co 0.01 max. V + (5/9) x Nb 0.10-0.25 Ti 0.005 max. Al 0.015 max. Fe Balance Included in the balance are the usual impurities found in commercial grades of steel alloys produced for similar use and properties including not more than about 0.01% phosphorus and not more than about 0.001% sulfur. Also disclosed is a hardened and tempered article that has very high strength and fracture toughness. The article is formed from the alloy having the weight percent composition set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A corrosion resistant, neutron absorbing, austenitic alloy powder is disclosed having the following composition in weight percent. C 0.08 max., Mn up to 3, Si up to 2, P 0.05 max., S 0.03 max., Cr 17-27, Ni 11-20, Mo+(W/1.92) up to 5.2, BEq 0.78-13.0, O 0.1 max., N up to 0.2, Y less than 0.005. The alloy contains at least about 0.25% B, at least about 0.05% Gd, and the balance of the alloy composition is iron and usual impurities. BEq is defined as %>B + 4.35x(%>Gd). An article of manufacture made from consolidated alloy powder is also disclosed which is characterized by a plurality of boride and gadolinide particles dispersed within a matrix. The boride and gadolinide particles are predominantly M2B, M3B2, M3X, and M5X in form, where X is gadolinium or a combination of gadolinium and boron and M is one or more of the elements silicon, chromium, nickel, molybdenum, iron.
A stainless steel strip article is disclosed. The article is formed from a corrosion resistant alloy having the following composition in weight percent, C 0.03 max. Mn 1.0 max. Si 0.75 max. P 0.040 max. S 0.020 max. Cr 10.9-11.1 Ni 10.9-11.1 Mo 0.9-1.1 Ti 1.5-1.6 Al 0.25 max. Nb 0.7-0.8 Cu 1 max. B 0.010 max. N 0.030 max. The balance is iron and usual impurities. The elongated thin strip article provides a room temperature tensile strength of at least 280 ksi (1930.5 MPa) in the solution treated and age hardened condition. A method of making the strip article and a method of using it to make a golf club are also disclosed.
C21D 7/02 - Modifying the physical properties of iron or steel by deformation by cold working
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
25.
FREE-MACHINING POWDER METALLURGY STEEL ARTICLES AND METHOD OF MAKING SAME
A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.
B22F 5/12 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of tubes or wires
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 33/02 - Making ferrous alloys by powder metallurgy
C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
A high strength, high toughness steel alloy is disclosed. The alloy has the following broad weight percent composition. Included in the balance are the usual impurities found in commercial grades of steel alloys produced for similar use and properties. Also disclosed is a hardened and tempered article that has very high strength and fracture toughness. The article is formed from the alloy having the broad weight percent composition set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A process for making a precipitation hardenable stainless steel alloy is described. The process includes the step of melting a martensitic steel alloy having the following composition in weight percent, about Carbon 0.03 max. Manganese 1.0 max. Silicon 0.75 max. Phosphorus 0.040 max. Sulfur 0.020 max. Chromium 10-13 Nickel 10.5-11.6 Titanium 1.5-1.8 Molybdenum 0.25-1.5 Copper 0.95 max. Aluminum 0.25 max. Niobium 0.3 max. Boron 0.010 max. Nitrogen 0.030 max. and the balance being iron and usual impurities. The process also includes the step of adding calcium to the alloy while molten. The calcium combines with available sulfur and oxygen to form calcium base inclusions selected from the group consisting of calcium sulfides, calcium oxides, calcium oxysulfides, and combinations thereof. In a further step, the alloy is processed to remove at least a portion of the calcium base inclusions. The alloy is then solidified. As a result of the process, the alloy has a matrix containing a sparse dispersion of said calcium-based inclusions and substantially no rare-earth base inclusions.
An age hardenable, martensitic steel alloy that provides high strength, high toughness, and good low cycle fatigue life and a method of making same are disclosed. The alloy comprises a matrix having a weight percent composition consisting essentially of about Carbon 0.2-0.36 Manganese 0.20 max. Silicon 0.10 max. Phosphorus 0.01 max. Sulfur 0.004 max. Chromium 1.3-4 Nickel 10-15 Molybdenum 0.75-2.7 Cobalt 8-22 Aluminum 0.01 max. Titanium 0.02 max. Calcium 0.001 max. and the balance being iron and usual impurities. The alloy further contains a plurality of inclusions dispersed in the alloy matrix. The inclusions comprise calcium compounds that are about 0.4μm to about 7.0μm in major dimension, they have a median size of at least about 1.6μm in major dimension, and the inclusions contain essentially no rare earth elements.
Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the presence of the second composition gives the mixture a greater hardness than that of the first composition alone. The first composition includes less than about 25 weight percent chromium, less than about 7 weight percent molybdenum, from about 10 to about 35 weight percent nickel, and iron. The second composition is different from the first and is present from about 0.1 weight percent to about 5 weight percent of the mixture.
A61L 27/42 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having an inorganic matrix
A61L 31/12 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material
A61L 31/18 - Materials at least partially X-ray or laser opaque
30.
CORROSION-RESISTANT, FREE-MACHINING, MAGNETIC STAINLESS STEEL
A corrosion-resistant, free-machining, magnetic stainless steel alloy is described. The alloy has the following weight percent composition: 0.025 max. C, 0.60 max. Mn, 1.0-2.0 Si, 0.035 max. P, 0.1 5-0.40 S, 12.0-14.0 Cr, 0.5 max. Ni, 0.5-1.3 Mo, 0.5-1.3 V, 0.5 max. Cu, 0.020 max. Al, 0.025 max. N, and the balance is iron and usual impurities.
An age hardenable martensitic steel alloy is disclosed. The alloy has the following composition in weight percent. C 0.30-0.36; Mn 0.05 max.; Si 0.05 max.; P 0.01 max.; S 0.0010 max.; Cr 1.30-3.2; Ni 10.0-13.0; Mo 1.0-2.70; Co 13.8-17.4; Ti 0.02 max.; Al 0.005 max.; Ce 0.030 max.; La 0.010 max. The balance is iron and the usual impurities. The composition of this alloy is balanced to provide a unique combination of very high strength, together with good toughness, ductility, and resistance to fatigue.
A corrosion resistant, martensitic steel alloy having very good cold formability is described. The alloy has the following weight percent composition. Carbon 0.10-0.40 Manganese 0.01 -2.0 Silicon 2.0 max. Phosphorus 0.2 max. Sulfur 0.030 max. Chromium 10-15 Nickel 0.5 max. Molybdenum 0.75-4.0 Nitrogen 0.02-0.15 Copper 1 .5-4.0 Titanium 0.01 max. Aluminum 0.01 max. Niobium + 0.10 max. Tantalum Vanadium 0.20 max. Zirconium less than 0.001 Calcium less than 0.001 The balance of the alloy is essentially iron. Nickel and copper are balanced in the alloy such that the ratio Ni/Cu is less than 0.2. A second embodiment of the alloy contains at least about 0.005% sulfur, selenium, or a combination thereof to provide good machinability.
