EP 0139168 A1 19850502 - Fine grained metal composition.
Title (en)
Fine grained metal composition.
Title (de)
Feinkörnige Metallzusammensetzungen.
Title (fr)
Composition métallique à grains fins.
Publication
Application
Priority
US 53399783 A 19830920
Abstract (en)
A metal alloy composition having a uniform, fine grained microstructure comprising uniform discrete spheroidal particles contained within a lower melting matrix, said alloy being a magnesium, ferrous or copper alloy. The composition is prepared by producing a solid metal alloy composition having an essentially directional grain structure and heating the directional grain composition to a temperature above the solidus and below the liquidus to produce a partially solid, partially liquid mixture containing at least 0.05 volume fraction liquid. The composition, prior to heating, has a strain level introduced such that upon heating, the mixture comprises uniform discrete spheroidal particles contained within a lower melting matrix. The heated alloy is then solidified, the solidified composition having a uniform, fine grained microstructure.
IPC 1-7
IPC 8 full level
B21C 23/00 (2006.01); C21D 8/00 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/06 (2006.01); C22F 1/08 (2006.01)
CPC (source: EP)
C21D 8/005 (2013.01); C22F 1/06 (2013.01); C22F 1/08 (2013.01)
Citation (search report)
- [Y] FR 2266749 A1 19751031 - PECHINEY ALUMINIUM [FR]
- [Y] FR 2266748 A1 19751031 - PECHINEY ALUMINIUM [FR]
- [XP] EP 0090253 A2 19831005 - ITT IND GMBH DEUTSCHE [DE], et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0139168 A1 19850502; AU 3310084 A 19850328; BR 8404599 A 19850806; JP S60149751 A 19850807
DOCDB simple family (application)
EP 84110109 A 19840824; AU 3310084 A 19840917; BR 8404599 A 19840914; JP 19408784 A 19840918