EP 2799165 B1 20160629 - METHOD FOR MOLDING ALUMINUM ALLOY POWDER, AND ALUMINUM ALLOY MEMBER
Title (en)
METHOD FOR MOLDING ALUMINUM ALLOY POWDER, AND ALUMINUM ALLOY MEMBER
Title (de)
VERFAHREN ZUM FORMEN EINES ALUMINIUMLEGIERUNGSPULVERS UND ALUMINIUMLEGIERUNGSTEIL
Title (fr)
PROCÉDÉ DE MOULAGE DE POUDRE D'ALLIAGE D'ALUMINIUM ET ÉLÉMENT EN ALLIAGE D'ALUMINIUM
Publication
Application
Priority
- JP 2012131428 A 20120608
- JP 2013064735 W 20130528
Abstract (en)
[origin: EP2799165A1] A method for forming an aluminum alloy powder is provided which allows a formed body of high properties to be obtained. The method for forming an aluminum alloy powder according to the present invention is characterized by comprising: a compacting step that applies a first pressure (P1) to an aluminum alloy powder to obtain a sparsely compact material, the aluminum alloy powder comprising microparticles of aluminum alloy, the sparsely compact material being such that the microparticles are intertangled and in contact with one another by plastic deformation while leaving spaces therebetween; and a forming step that applies a second pressure (P2) to the sparsely compact material at a forming temperature to obtain a dense formed body in which the microparticles are metallically bonded to one another, the forming temperature being a temperature at which no liquid phase occurs at surfaces of the microparticles, the pressure ratio of the second pressure (P2) to the first pressure (P1) (P2/P1) being 1.2 or more. Surface oxide films on the microparticles that constitute the sparsely compact material are broken by the forming step to expose new surfaces, so that the microparticles are metallically bonded. Consequently, it has become possible to obtain a formed body that has excellent strength and ductility and is dense and homogeneous.
IPC 8 full level
B22F 3/02 (2006.01); B22F 1/00 (2006.01); B22F 3/14 (2006.01); B22F 3/16 (2006.01); C22C 1/04 (2006.01); C22C 21/00 (2006.01)
CPC (source: EP)
B22F 3/16 (2013.01); C22C 1/0416 (2013.01); C22C 21/00 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (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 2799165 A1 20141105; EP 2799165 A4 20151111; EP 2799165 B1 20160629; JP 2013256678 A 20131226; JP 5772731 B2 20150902; WO 2013183488 A1 20131212
DOCDB simple family (application)
EP 13800173 A 20130528; JP 2012131428 A 20120608; JP 2013064735 W 20130528