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1. WO1996038598 - PROCESSING ALUMINIUM ARTICLES FOR IMPROVED BAKE HARDENABILITY

Publication Number WO/1996/038598
Publication Date 05.12.1996
International Application No. PCT/US1996/005919
International Filing Date 02.05.1996
Chapter 2 Demand Filed 18.12.1996
IPC
C22C 21/02 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
02with silicon as the next major constituent
C22C 21/08 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
06with magnesium as the next major constituent
08with silicon
C22F 1/043 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
043of alloys with silicon as the next major constituent
C22F 1/05 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
05of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
CPC
C22C 21/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
02with silicon as the next major constituent
C22C 21/08
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
06with magnesium as the next major constituent
08with silicon
C22F 1/043
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
043of alloys with silicon as the next major constituent
C22F 1/05
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
05of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Applicants
  • KAISER ALUMINUM & CHEMICAL CORPORATION [US]/[US]
Inventors
  • SHEN, Tien, H.
Agents
  • COOPER, George, M.
Priority Data
452,81530.05.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESSING ALUMINIUM ARTICLES FOR IMPROVED BAKE HARDENABILITY
(FR) TRAITEMENT D'ARTICLES EN ALUMINIUM POUR TREMPABILITE DE CUISSON AMELIOREE
Abstract
(EN)
A method of producing an aluminium article comprising the steps of: (a) providing stock including an aluminium alloy comprising about 1.0 to 1.3 wt.% silicon, about .40 to .80 wt.% magnesium, about .02 to .20 wt.% of an element selected from the group consisting of manganese and chromium, not more than about .70 wt% copper, the remainder substantially aluminum, incidental elements and impurities; (b) hot rolling the stock; (c) solution heat treating; (d) rapid quenching to a threshold temperature of about 200 degrees F; (e) cooling to room temperature; (f) holding at room temperature for not more than 6 hours; and (g) reheating to a temperature of about 200 degrees F. The figure shows a controlled heat pattern of cooling after solution heat treatment according to the present invention compared to the prior art.
(FR)
Cette invention concerne un procédé de fabrication d'un article en aluminium, lequel procédé comprend les étapes consistant à: (a) utiliser une charge comprenant un alliage d'aluminium comportant environ de 1,0 à 1,3 % en poids de silicium, environ 0,40 à 0,80 % en poids de magnésium, environ 0,02 à 0,20 % en poids d'un élément choisi dans le groupe comprenant du manganèse et du chrome, pas plus d'environ 0,70 % en poids de cuivre, le reste étant essentiellement de l'aluminium, des éléments et des impuretés incidents; (b) laminer à chaud cette charge; (c) la soumettre à un traitement thermique de mise en solution; (d) la refroidir rapidement à une température seuil d'environ 200 °F; (e) la refroidir à la température ambiante; (f) la maintenir à la température ambiante pendant 6 heures au maximum; et (g) la réchauffer à une température d'environ 200 °F. La figure illustre, en accord avec la présente invention et en comparaison avec l'état actuel de la technique, une séquence de refroidissement à chaleur régulée, appliquée après le traitement thermique de mise en solution.
Also published as
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