EP 1205567 A2 20020515 - Production of ultra-fine grain structure in as-cast aluminium alloys
Title (en)
Production of ultra-fine grain structure in as-cast aluminium alloys
Title (de)
Herstellung von einer ultrafeinen Korngefüge in Aluminium-Legierungen im Gusszustand
Title (fr)
Production de structure de grains ultrafins dans les alliages d'aluminium bruts de coulée
Publication
Application
Priority
US 71017500 A 20001110
Abstract (en)
A method of controlling grain size in as-cast aluminum alloy having the steps of a) providing a molten aluminum alloy including an alloying element selected from the group consisting of Ti, Sc, Zr, V, Hf, Nb and Y; b) adding a grain refiner to the molten aluminum alloy to form a melt; and c) solidifying the melt to form an ingot. The grain refiner includes Ti and B or C, and is added to the melt in an amount to yield the concentration in the melt of B or C from the grain refiner of about 0.003-0.010 wt. %. Grains in the as-cast aluminum alloy are about 200 microns or less in size.
IPC 1-7
IPC 8 full level
C22C 1/02 (2006.01); C22C 1/03 (2006.01); C22C 21/00 (2006.01)
CPC (source: EP)
C22C 1/026 (2013.01); C22C 1/03 (2013.01); C22C 21/00 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 1205567 A2 20020515; EP 1205567 A3 20020605; EP 1205567 B1 20050504; CA 2361484 A1 20020510; DE 60110523 D1 20050609
DOCDB simple family (application)
EP 01126694 A 20011108; CA 2361484 A 20011108; DE 60110523 T 20011108