A method for making an aluminum alloy includes steps of (1) weighing out starting materials to achieve a mass of material having a composition that includes aluminum, about 1.8 to about 5.6 percent by weight copper, about 0.6 to about 2.6 percent by weight lithium, and at least one of lanthanum up to about 1.5 percent by weight, strontium up to about 1.5 percent by weight, cerium up to about 1.5 percent by weight, and praseodymium up to about 1.5 percent by weight; (2) loading said starting materials into a crucible; (3) inserting said crucible into a chamber; (4) evacuating said chamber to a predetermined vacuum level; (5) melting said starting materials to form a molten mass; and (6) casting said molten mass into a mold.

A method for making an aluminum alloy includes steps of (1) weighing out starting materials to achieve a mass of material having a composition that includes aluminum, about 1.8 to about 5.6 percent by weight copper, about 0.6 to about 2.6 percent by weight lithium, and at least one of lanthanum up to about 1.5 percent by weight, strontium up to about 1.5 percent by weight, cerium up to about 1.5 percent by weight, and praseodymium up to about 1.5 percent by weight; (2) loading said starting materials into a crucible; (3) inserting said crucible into a chamber; (4) evacuating said chamber to a predetermined vacuum level; (5) melting said starting materials to form a molten mass; and (6) casting said molten mass into a mold.

There is provided a method for manufacturing a part (20) including a formation of successive solid metal layers (201 . . . 20n), superimposed on one another, each layer describing a pattern defined from a digital model (M), each layer being formed by the deposition of a metal (25), referred to as a solder, the solder being subjected to an input of energy so as to melt and, in solidifying, to constitute said layer, wherein the solder takes the form of a powder (25), the exposure of which to an energy beam (32) results in melting followed by solidification so as to form a solid layer (201 . . . 20n).

A powder composition for use in additive manufacturing, related metal-based particles, related methods and related consolidated part. The composition consisting of metal-based particles and a remainder representing at most 10 wt % of a total weight of the composition, which can be at least one of a ceramic, a lubricant and a binder. The metal-based particles are highly spherical and can be considered fines-free. More particularly, less than 8,000,000 of the metal-based particles per gram of the metal-based particles have a diameter smaller than or equal to 15 μm; and the metal-based particles have at least one of an average aspect ratio greater than or equal to 0.95; an average roundness greater than or equal to 0.95; and an average Krumbein sphericity greater than or equal to 0.95.

A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.

A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.

Systems and methods of non-contact tensioning of a metal strip during metal processing include passing the metal strip adjacent a magnetic rotor. The magnetic rotor is spaced apart from the metal strip by a first distance. The systems and methods also include tensioning the metal strip through the magnetic rotor by rotating the magnetic rotor. Rotating the magnetic rotor induces a magnetic field into the metal strip such that the metal strip is tensioned in an upstream direction or a downstream direction. In other aspects, rotating the magnetic rotor induces a magnetic field into the metal strip such that a force normal to a surface of the metal strip is applied to the metal strip.

New 2xxx aluminum alloys are disclosed. The new 2xxx aluminum alloys generally include from 0.08 to 0.20 wt. % Ti. The new 2xxx aluminum alloys may realize an improved combination of two or more of strength, fracture toughness, elongation, and corrosion resistance, for instance.

Provided is an aluminum alloy material having high strength and excellent wear resistance, which can be a substitute for an iron-based metal material or a copper-based metal material. The aluminum alloy material has an alloy composition containing 0.05-1.80% by mass of Mg, 0.01-2.00% by mass of Si, and 0.01-1.50% by mass of Fe, the remainder comprising Al and unavoidable impurities, wherein the aluminum alloy material has a fibrous microstructure in which crystal grains extend along substantially one direction, the average value of the short-direction dimension L2 perpendicular to the longitudinal direction of the crystal grains is 500 nm or less in a cross section parallel to the substantially one direction, and the arithmetic mean roughness Ra of a principal surface of the aluminum alloy material is no greater than 1.000 μm.

Substrates suitable for mirrors used at wavelengths in the EUV wavelength range have substrates (1) including a base body (2) made of a precipitation-hardened alloy, of an intermetallic phase of an alloy system, of a particulate composite or of an alloy having a composition which, in the phase diagram of the corresponding alloy system, lies in a region which is bounded by phase stability lines. Preferably, the base body (2) is made of a precipitation-hardened copper or aluminum alloy. A highly reflective layer (6) is preferably provided on a polishing layer (3) of the substrate (1) of the EUV mirror (5).