Global Patent Index - EP 3456853 A1

EP 3456853 A1 20190320 - MANUFACTURING OF HIGH STRENGTH AND HEAT RESISTANT ALUMINIUM ALLOYS STRENGTHENED BY DUAL PRECIPITATES

Title (en)

MANUFACTURING OF HIGH STRENGTH AND HEAT RESISTANT ALUMINIUM ALLOYS STRENGTHENED BY DUAL PRECIPITATES

Title (de)

HERSTELLUNG VON HOCHFESTEN UND WÄRMEBESTÄNDIGEN DURCH DUAL-PRÄZIPITATE VERSTÄRKTEN ALUMINIUMLEGIERUNGEN

Title (fr)

FABRICATION D'ALLIAGES D'ALUMINIUM À HAUTE RÉSISTANCE MÉCANIQUE ET THERMIQUE RENFORCÉS PAR DES PRÉCIPITÉS DOUBLES

Publication

EP 3456853 A1 20190320 (EN)

Application

EP 17468002 A 20171227

Priority

SI 201700256 A 20170913

Abstract (en)

The present invention the Manufacturing of High Strength and Heat Resistant Aluminium Alloys Strengthened by Dual Precipitates relates to a high-strength and heat resistant aluminium alloy and a method for producing the same. The alloys possess 2.0-5.0 mass.% Mn; 0.001-2.0 mass.% Cr; 2.0-5.0 mass.% Cr + Mn; 0.001-0.5 mass.% V; 2.0-4.5 mass.% Cu; 0.001-0.9 mass.% Be; 0.05-0.5 mass.% Sc; and comprising of at least one element out of Zr, Y, Ti, Hf and Nb with a content of 0.001-0.4 mass.%; the balance being Al and inevitable impurities up to 0.5 mass.%. The alloys are cast with a cooling rate exceeding 100 K s -1 . The alloys can be plastically deformed before aging. Afterwards, they are aged at a first ageing temperature for a first predetermined time. Then they are subjected to the second ageing treatment at a second temperature for a second predetermined time to obtain a combination of icosahedral and L 12 precipitates. The alloys can be aged at a third ageing temperature for a third predetermined ageing time after being quenched from the second ageing temperature.

IPC 8 full level

C22F 1/04 (2006.01); C22F 1/00 (2006.01); C22F 1/057 (2006.01)

CPC (source: EP)

C22C 21/00 (2013.01); C22C 21/12 (2013.01); C22F 1/002 (2013.01); C22F 1/04 (2013.01); C22F 1/057 (2013.01)

Citation (applicant)

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Citation (search report)

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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)

EP 3456853 A1 20190320; EP 3456853 B1 20200219; SI 25352 A 20180731

DOCDB simple family (application)

EP 17468002 A 20171227; SI 201700256 A 20170913