EP 2669028 B1 20190717 - CRYSTAL GRAIN REFINING AGENT FOR CASTING AND METHOD FOR PRODUCING THE SAME
Title (en)
CRYSTAL GRAIN REFINING AGENT FOR CASTING AND METHOD FOR PRODUCING THE SAME
Title (de)
KRISTALLKORNVERFEINERUNGSMITTEL ZUM GIESSEN UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
AGENT D'AFFINAGE DE GRAIN CRISTALLIN POUR COULAGE ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2011013269 A 20110125
- JP 2012051050 W 20120119
Abstract (en)
[origin: EP2669028A1] [Object] To provide a grain refiner for casting; and a method for producing the same. The grain refiner contains heterogeneous nucleator particles having a smaller degree of mismatching ´ with respect to pure aluminum or an aluminum alloy than those of customary grain refiners. [Solution] The grain refiner is produced by rapid and low-temperature sintering through spark plasma sintering. The grain refiner contains heterogeneous nucleator particles that have a small degree of mismatching and originally fail to exist in equilibrium with aluminum. Typically spark plasma sintering gives a grain refiner for casting which includes an aluminum matrix; and particles of an L1 2 structure Al 5 CuTi 2 intermetallic compound dispersed in the matrix. The grain refiner, when added to a molten metal, gives a pure-aluminum or aluminum-alloy cast material having a refined and uniformized microstructure.
IPC 8 full level
B22D 27/20 (2006.01); B22F 3/105 (2006.01); C22C 1/02 (2006.01); C22C 1/04 (2006.01); C22C 21/00 (2006.01)
CPC (source: EP)
B22F 3/105 (2013.01); C22C 1/02 (2013.01); C22C 1/026 (2013.01); C22C 1/0416 (2013.01); C22C 1/047 (2023.01); C22C 1/06 (2013.01); C22C 21/00 (2013.01); B22F 2998/10 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2669028 A1 20131204; EP 2669028 A4 20160824; EP 2669028 B1 20190717; JP 5850372 B2 20160203; JP WO2012102162 A1 20140630; WO 2012102162 A1 20120802
DOCDB simple family (application)
EP 12738824 A 20120119; JP 2012051050 W 20120119; JP 2012554746 A 20120119