Title:
優れた曲げ特性を有するアルミニウム合金の形成方法
Document Type and Number:
Japanese Patent JP4189954
Kind Code:
B2
Abstract:
A process is described for producing an aluminum alloy sheet having excellent bendability for use in forming panels for automobiles. An aluminum alloy containing 0.50 to 0.75 by weight Mg, 0.7 to 0.85% by weight Si, 0.1 to 0.3% by weight Fe, 0.15 to 0.35% by weight Mn, and the balance Al and incidental impurities, is used and is semi-continuously cast into ingot. The cast alloy ingot is subjected to hot rolling and cold rolling, followed by solution heat treatment of the formed sheet. The heat treated sheet is quenched to a temperature of about 60-120° C. and the sheet is then coiled. This coil is then pre-aged by slowly cooling the coil from an initial temperature of about 60-120° C. to room temperature at a cooling rate of less than 10° C./hr.
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Inventors:
Michael jackson bull
David James Lloyd
David James Lloyd
Application Number:
JP2002587666A
Publication Date:
December 03, 2008
Filing Date:
May 03, 2002
Export Citation:
Assignee:
NOVELIS INC.
International Classes:
C22F1/05; C22C21/02; C22C21/06; C22C21/08; C22F1/00; C22F1/043
Domestic Patent References:
| JP6017208A | ||||
| JP11172390A | ||||
| JP2001020027A | ||||
| JP10502973A | ||||
| JP2001513144A | ||||
| JP2002520486A | ||||
| JP2002508030A |
Attorney, Agent or Firm:
Mitsuo Tanaka
Hisao Ishii
Hisao Ishii