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Beryllium-aluminium alloy
Beryllium-aluminum alloy is an alloy that consists of 62% beryllium and 38% aluminum, by weight, corresponding approximately to an empirical formula of Be2Al. It was first developed in the 1960s by the Lockheed Missiles and Space Company, who called it Lockalloy, and used as a structural metal in the aerospace industry because of its high specific strength and stiffness. The material was used in the Lockheed YF12 aircraft and LGM-30 Minuteman missile systems. In the 1970s production difficulties limited the material to a few specialized uses and by the mid 1970s Lockalloy was no longer commercially available.
In 1990, Materion Beryllium & Composites re-introduced the material into the commercial marketplace as a powder-sintered composite under the trade name of AlBeMet. AlBeMet is the trade name for a beryllium and aluminium metal matrix composite material derived by a powder metallurgy process. AlBeMet AM162 is manufactured by Materion Corporation Brush Beryllium and Composites (formerly known as Brush Wellman).
AlBeMet is formed by hot consolidating gas atomized prealloyed powder. Each powder particle contains aluminium between beryllium dendrites producing a uniform microstructure. Aluminium-beryllium metal matrix composite combines the high modulus and low density characteristics of beryllium with the fabrication and mechanical property behaviors of aluminium.
Due to weight advantage, Be-Al alloys are used in aerospace and satellite applications.
The composition of AlBeMet AM162 by relative weight is 38% Al, 62% Be. AlBeMet has a density of 2.071 g/cm3 (0.07482 lb/in3).
The mechanical properties of AM162 have been characterized in all three-product forms with the extruded product form of AlBeMet having a significant design database. The extruded bar is fabricated by cold isostatic pressing (CIPing) the isotropic spherical aluminium-beryllium powder into semi-dense billets and then canning the billet for subsequent extrusion with a minimum of a 4:1 reduction ratio.
Mechanical properties are minimum values at room temperature[clarification needed]. Wrought mechanical properties for extrusions are in the longitudinal direction. Transverse properties are generally lower.
A number of standard extrusion dies are available. Rolled product is available in a thickness range of 0.063” to 0.313” × 25” (0.16 to 0.795 cm × 63.5 cm) length times width dependent on gauge. Mechanical properties for HIP’d, extruded, and/or rolled AlBe metal matrix composites are in the annealed condition.
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Beryllium-aluminium alloy
Beryllium-aluminum alloy is an alloy that consists of 62% beryllium and 38% aluminum, by weight, corresponding approximately to an empirical formula of Be2Al. It was first developed in the 1960s by the Lockheed Missiles and Space Company, who called it Lockalloy, and used as a structural metal in the aerospace industry because of its high specific strength and stiffness. The material was used in the Lockheed YF12 aircraft and LGM-30 Minuteman missile systems. In the 1970s production difficulties limited the material to a few specialized uses and by the mid 1970s Lockalloy was no longer commercially available.
In 1990, Materion Beryllium & Composites re-introduced the material into the commercial marketplace as a powder-sintered composite under the trade name of AlBeMet. AlBeMet is the trade name for a beryllium and aluminium metal matrix composite material derived by a powder metallurgy process. AlBeMet AM162 is manufactured by Materion Corporation Brush Beryllium and Composites (formerly known as Brush Wellman).
AlBeMet is formed by hot consolidating gas atomized prealloyed powder. Each powder particle contains aluminium between beryllium dendrites producing a uniform microstructure. Aluminium-beryllium metal matrix composite combines the high modulus and low density characteristics of beryllium with the fabrication and mechanical property behaviors of aluminium.
Due to weight advantage, Be-Al alloys are used in aerospace and satellite applications.
The composition of AlBeMet AM162 by relative weight is 38% Al, 62% Be. AlBeMet has a density of 2.071 g/cm3 (0.07482 lb/in3).
The mechanical properties of AM162 have been characterized in all three-product forms with the extruded product form of AlBeMet having a significant design database. The extruded bar is fabricated by cold isostatic pressing (CIPing) the isotropic spherical aluminium-beryllium powder into semi-dense billets and then canning the billet for subsequent extrusion with a minimum of a 4:1 reduction ratio.
Mechanical properties are minimum values at room temperature[clarification needed]. Wrought mechanical properties for extrusions are in the longitudinal direction. Transverse properties are generally lower.
A number of standard extrusion dies are available. Rolled product is available in a thickness range of 0.063” to 0.313” × 25” (0.16 to 0.795 cm × 63.5 cm) length times width dependent on gauge. Mechanical properties for HIP’d, extruded, and/or rolled AlBe metal matrix composites are in the annealed condition.