EP 2888383 A1 20150701 - ALUMINIUM ALLOY STRIP WHICH IS RESISTANT TO INTERCRYSTALLINE CORROSION AND METHOD FOR PRODUCING SAME
Title (en)
ALUMINIUM ALLOY STRIP WHICH IS RESISTANT TO INTERCRYSTALLINE CORROSION AND METHOD FOR PRODUCING SAME
Title (de)
HOCHUMFORMBARES UND IK-BESTÄNDIGES ALMG-BAND
Title (fr)
BANDE D'ALLIAGE EN ALUMINIUM RÉSISTANT À LA CORROSION INTERCRISTALLINE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- EP 12181356 A 20120822
- EP 2013064736 W 20130711
- EP 2013067487 W 20130822
- EP 13756053 A 20130822
Abstract (en)
[origin: WO2014029856A1] The invention relates to a cold-rolled aluminum alloy strip made of an AlMg aluminum alloy as well as a method for producing the same. Furthermore, adequate components made from said aluminum alloy strips are also disclosed. The aim of the invention is to design a single-layer aluminum alloy strip that is sufficiently resistant to intergranular corrosion and is nevertheless very easily malleable so that even large-area deep-drawn parts, e.g. interior parts of motor vehicle doors, can be made with sufficient strength. Said aim is achieved by an aluminum alloy strip made of an AlMg aluminum alloy which has the following alloying components: Si <= 0.2 wt.%, Fe <= 0.35 wt.%, Cu <= 0.15 wt.%, 0.2 wt.% <= Mn < 0.35 wt.%, 4.1 wt.% <= Mg <= 4.5 wt.%, Cr <= 0.1 wt.%, Zn <= 0.25 wt.%, Ti <= 0.1 wt.%, the remainder consisting of Al and inevitable impurities, each of which amounts to no more than 0.05 wt.% and the total amount of which amounts to no more than 0.15 wt.%. The aluminum alloy strip has a recrystallized structure, the average grain size of the structure ranges from 15 mum to 30 mum, preferably from 15mum to 25 mum, and the final soft annealing of the aluminum alloy strip is performed in a continuous furnace.
IPC 8 full level
C22C 21/06 (2006.01); C22F 1/047 (2006.01)
CPC (source: EP RU US)
C22C 21/00 (2013.01 - EP US); C22C 21/04 (2013.01 - RU); C22C 21/06 (2013.01 - EP US); C22C 21/08 (2013.01 - EP US); C22F 1/047 (2013.01 - EP US); C22F 1/047 (2013.01 - RU)
Citation (search report)
See references of WO 2014029856A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014029856 A1 20140227; CA 2882614 A1 20140227; CA 2882614 C 20180102; CN 104937120 A 20150923; CN 104937120 B 20171117; EP 2888383 A1 20150701; EP 2888383 B1 20160330; ES 2569945 T3 20160513; JP 2015532679 A 20151112; JP 5923665 B2 20160524; KR 101709289 B1 20170222; KR 20150076151 A 20150706; RU 2015110021 A 20161020; RU 2608931 C2 20170126; US 2015159250 A1 20150611
DOCDB simple family (application)
EP 2013067487 W 20130822; CA 2882614 A 20130822; CN 201380044183 A 20130822; EP 13756053 A 20130822; ES 13756053 T 20130822; JP 2015527926 A 20130822; KR 20157007194 A 20130822; RU 2015110021 A 20130822; US 201514624793 A 20150218