Preparing beryllium containing mother alloy e.g. aluminum-beryllium alloy, useful e.g. in gas turbine engines, comprises converting a solid material mixture of a raw material comprising a beryllium concentrate and a metal component

摘要

Preparation of a beryllium containing mother alloy comprises converting a solid material mixture of a raw material comprising a beryllium concentrate and a metal component in a temperature. Independent claims are included for: (1) mother alloy obtained by the above process and comprising a composition (I) containing 50-85 wt.% of aluminum, 1-5 wt.% of beryllium, 2x 10 -8to 1x 10 -5wt.% of oxygen, 3-40 wt.% of silicon and 0.5-5 wt.% of carbon, and a composition (II) containing 2-15 wt.% of aluminum, 1-5 wt.% of beryllium, 50-85 wt.% of metal, 2x 10 -8to 1x 10 -5wt.% of oxygen, 5-35 wt.% of silicon and 0.5-5 wt.% of carbon, where metal is chromium, nickel or copper; (2) the preparation of a beryllium-containing alloy comprising segregation of the mother alloy; and (3) an alloy from the preparation of a beryllium-containing alloy comprising a composition (III) containing 70-97 wt.% of aluminum, 1.5-3.5 wt.% of beryllium, less than 2x 10 -8wt.% of oxygen, 1-30 wt.% of silicon and less than 0.5 wt.% of carbon and a composition (IV) containing 4-12 wt.% of aluminum, 2-5 wt.% of beryllium, 60-85 wt.% of metal, less than 2x 10 -8wt.% of oxygen, 1-30 wt.% of silicon and less than 0.5 wt.% of carbon, where the metal is chromium, nickel or copper.