EP 0400059 A4 19910724 - CAST ALUMINIUM ALLOYS
Title (en)
CAST ALUMINIUM ALLOYS
Publication
Application
Priority
- AU 8900054 W 19890210
- AU PI668188 A 19880210
Abstract (en)
[origin: WO8907662A1] A cast hypereutectic Al-Si alloy with from 12-15 % Si, having excellent wear resistance and machinability, improved fatigue strength and good levels of ambient and elevated temperature properties is provided, as well as a method of producing such alloy. The alloy and a melt used in the method contains Sr in excess of 0.10 % and Ti in excess of 0.005 %, the alloy further comprising: Cu 1.5 to 5.5 %, Ni 1.0 to 3.00 %, Mg 0.1 to 1.0 %, Fe 0.1 to 1.0 %, Mn 0.1 to 0.8 %, Zr 0.01 to 0.1 %, Zn 0 to 3.0 %, Sn 0 to 0.2 %, Pb 0 to 0.2 %, Cr 0 to 0.1 %, Na 0 to 0.01 %, B (elemental) 0.05 % maximum, Ca 0.003 % maximum, P 0.003 % maximum. Others 0.05 % maximum each, the balance, apart from incidental impurities, being Al. The level of Sr in excess of 0.10 % and Ti in excess of 0.005 % is such that the alloy has a microstructure in which any primary Si formed is substantially uniformly dispersed and is substantially free of segregation, and in which substantially uniformly dispersed Sr intermetallic particles are present but are substantially free of such particles in the form of platelets, with the microstructure predominantly comprising a eutectic matrix.
IPC 1-7
IPC 8 full level
B22D 21/04 (2006.01); C22C 1/00 (2006.01); C22C 1/02 (2006.01); C22C 21/02 (2006.01); C22C 21/04 (2006.01); C22F 1/043 (2006.01); C22F 1/047 (2006.01)
CPC (source: EP)
C22C 21/04 (2013.01); C22F 1/047 (2013.01)
Citation (search report)
- [A] FR 2588017 A1 19870403 - UBE INDUSTRIES [JP]
- [A] DE 1932537 A1 19700205 - COMALCO ALU
- See references of WO 8907662A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8907662 A1 19890824; AT E106102 T1 19940615; AU 3069789 A 19890906; AU 612239 B2 19910704; CA 1329024 C 19940503; DE 68915539 D1 19940630; DE 68915539 T2 19940901; EP 0400059 A1 19901205; EP 0400059 A4 19910724; EP 0400059 B1 19940525; ES 2016004 A6 19901001; IN 173691 B 19910625; JP 2858838 B2 19990217; JP H03503658 A 19910815; KR 900700642 A 19900816; KR 970001410 B1 19970206; NZ 227940 A 19901221
DOCDB simple family (application)
AU 8900054 W 19890210; AT 89902718 T 19890210; AU 3069789 A 19890210; CA 590803 A 19890210; DE 68915539 T 19890210; EP 89902718 A 19890210; ES 8900806 A 19890210; IN 108MA1989 A 19890210; JP 50251589 A 19890210; KR 890701719 A 19890919; NZ 22794089 A 19890210