Aluminium Material Which Can Be Exposed To High Temperatures, Is Alloyed With Scandium And Has Improved Extrudability

Abstract

The present invention relates to the use of a process for producing an aluminium material which can be exposed to high temperatures and is alloyed with scandium. In this process, a precursor material made of an alloy comprising the metals aluminium and scandium is introduced into a vacuum chamber, the precursor material is subjected to vacuum degassing and the precursor material is treated with nitrogen gas. This is followed by final vacuum degassing of the precursor material.

1 . A method for producing a high temperature-loadable alloy comprising the steps of:
 a) introducing a primary material comprising an alloy of aluminium and scandium into a vacuum chamber;   b) vacuum degassing the primary material;   c) gassing the primary material with nitrogen; and   d) subjecting the primary material to final vacuum degassing;   
       for producing a high temperature-loadable aluminium material alloyed with scandium. 
     
     
         2 . The method according to  claim 1 , wherein the resulting high temperature-loadable aluminium material alloyed with scandium exhibits improved extrusion moldability. 
     
     
         3 . The method according to  claim 1 , wherein the primary material was procuded via the melt spinning method. 
     
     
         4 . The method according to  claim 1 , wherein the primary material is present in the form of granules. 
     
     
         5 . The method according to  claim 1 , wherein the alloy additionally contains magnesium. 
     
     
         6 . The method according to  claim 1 , wherein the alloy additionally comprises at least one other element selected from the group consisting of Zr, Ti, Y, Hf, Ta, La, Ce, Tb, Nd, Eu, Gd, Dy, Ho, Zn, Mn, Ag, Li, Cu, Si and Ca and mixtures thereof. 
     
     
         7 . The method according to  claim 1 , wherein vacuum degassing according to step (b) and/or (d) is performed using a vacuum of 0.1 to 10 −8  mbar. 
     
     
         8 . The method according to  claim 1 , wherein vacuum degassing according to step (b) and/or (d) is performed at a temperature of 275 to 400° C. 
     
     
         9 . The method according to  claim 1 , wherein vacuum degassing according to step (b) and/or (d) is performed over a period of 15 min to 30 min. 
     
     
         10 . The method according to  claim 1  wherein steps (b) and (c) are performed a plurality of times in succession. 
     
     
         11 . The method according to  claim 1 , wherein the method encompasses another, additional step (e) in which the primary material is compacted in the vacuum chamber immediately after step (d). 
     
     
         12 . Method for producing a high temperature-loadable aluminium material alloyed with scandium comprising the following steps:
 a) introducing a primary material comprising an alloy of aluminium and scandium into a vacuum chamber, wherein the primary material was fabricated according to the melt spinning process;   b) vacuum degassing the primary material;   c) gassing the primary material with nitrogen; and   d) subjecting the primary material to a final vacuum degassing.   
     
     
         13 . High temperature loadable aluminium material alloyed with scandium, obtained in the method comprising the following steps:
 a) introducing a primary material comprising an alloy of aluminium and scandium into a vacuum chamber, wherein the primary material was fabricated according to the melt spinning process;   b) vacuum degassing the primary material;   c) gassing the primary material with nitrogen; and   d) subjecting the primary material to final vacuum degassing.   
     
     
         14 . The method according to  claim 13  comprising using the high temperature loadable aluminium material to produce a welded, rolled, extrusion molded or forged component for an aircraft, ship or motor vehicle. 
     
     
         15 . A welded, rolled, extrusion molded or forged component for an aircraft, ship or motor vehicle, comprising a material according to  claim 13 .