EP 1737995 A1 20070103 - AL-MG ALLOY SHEET WITH EXCELLENT FORMABILITY AT HIGH TEMPERATURES AND HIGH SPEEDS AND METHOD OF PRODUCTION OF SAME
Title (en)
AL-MG ALLOY SHEET WITH EXCELLENT FORMABILITY AT HIGH TEMPERATURES AND HIGH SPEEDS AND METHOD OF PRODUCTION OF SAME
Title (de)
BLECH AUS AL-MG-LEGIERUNG MIT HERVORRAGENDER FORMBARKEIT BEI HOHEN TEMPERATUREN UND HOHEN GESCHWINDIGKEITEN UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
FEUILLE D'ALLIAGE AL-MG AYANT UNE EXCELLENTE FORMABILITÉ À DES TEMPÉRATURES ÉLEVÉES ET DES VITESSES ÉLEVÉES ET PROCÉDÉ DE PRODUCTION DE CELLE-CI
Publication
Application
Priority
- JP 2005007657 W 20050415
- JP 2004128040 A 20040423
Abstract (en)
[origin: WO2005103313A1] To provide an aluminum alloy sheet with excellent formability at high temperatures and high speeds with a reduced amount of cavities after forming and a method of production of the same. An aluminum alloy sheet consisting of 2.0-8.0 wt% of Mg, 0.06-0.2 wt% of Si, 0.1-0.5 wt% of Fe, 0.1-0.5 wt% of Mn, and the balance of Al and unavoidable impurities, wherein a density of inter-metallic compounds having an equivalent circle diameter of 1 to 5 (m is 5000/mm2 or more and an average crystal grain size is 20 (m or less. A method of production of an aluminum alloy sheet comprising the steps of casting an alloy melt having the above described composition by a twin belt casting machine at a cooling rate of 20 to 150°C/sec at the location of 1/4 of the slab thickness during the casting to form a slab having a thickness of 5 to 15 mm, subsequently rewinding up the slab as a coil, cold rolling the slab taken out from the coil at a cold rolling reduction of 70 to 96%, and performing annealing heating the obtained cold rolled sheet at a heating rate of 50°C/sec or more to 420 to 500°C.
IPC 8 full level
B22D 11/00 (2006.01); B22D 11/06 (2006.01); C22C 21/06 (2006.01); C22C 21/08 (2006.01); C22F 1/00 (2006.01); C22F 1/047 (2006.01)
CPC (source: EP KR US)
B22D 11/003 (2013.01 - EP US); B22D 11/0605 (2013.01 - EP US); C22C 21/06 (2013.01 - EP US); C22C 21/08 (2013.01 - EP KR US); C22F 1/047 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2005103313A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2005103313 A1 20051103; CA 2563789 A1 20051103; CN 100519797 C 20090729; CN 1946861 A 20070411; EP 1737995 A1 20070103; JP 2005307300 A 20051104; JP 4534573 B2 20100901; KR 20060135849 A 20061229; TW 200540280 A 20051216; TW I310789 B 20090611; US 2007217943 A1 20070920
DOCDB simple family (application)
JP 2005007657 W 20050415; CA 2563789 A 20050415; CN 200580012419 A 20050415; EP 05734276 A 20050415; JP 2004128040 A 20040423; KR 20067020240 A 20060928; TW 94112865 A 20050422; US 57890805 A 20050415