Title:
【発明の名称】結晶間耐食性が向上したAlSiMgCu合金製製品の製造方法
Document Type and Number:
Japanese Patent JPH10512924
Kind Code:
A
Abstract:
PCT No. PCT/FR95/01412 Sec. 371 Date Apr. 4, 1997 Sec. 102(e) Date Apr. 4, 1997 PCT Filed Oct. 24, 1995 PCT Pub. No. WO96/12829 PCT Pub. Date May 2, 1996The invention concerns a process for the production of rolled or extruded products of high strength AlSiMgCu aluminium alloy with good intergranular corrosion resistance, comprising the following steps: casting a plate or billet with the following composition (by weight): Si: 0.7-1.3% Mg: 0.6-1.1% Cu: 0.5-1.1% Mn: 0.3-0.8% Zr: <0.20% Fe: <0.30% Zn: <1% Ag: <1% Cr: <0.25% other elements: <0.05% each and <0.15% in total remainder: aluminium; with: Mg/Si<1 homogenising in the range 470 DEG C. to 570 DEG C.; hot working, and optionally cold working; solution heat treating in the range 540 DEG C. to 570 DEG C.; quenching; annealing, comprising at least one temperature plateau in the range 150 DEG C. to 250 DEG C., preferably in the range 165 DEG C. to 220 DEG C., the total period measured as the equivalent time at 175 DEG C. being in the range 30 h to 300 h.
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Inventors:
Beche, Duni
Warner, Timothy
Warner, Timothy
Application Number:
JP51370096A
Publication Date:
December 08, 1998
Filing Date:
October 24, 1995
Export Citation:
Assignee:
Pesinei Renaru
International Classes:
C22F1/00; C22C21/02; C22C21/08; C22F1/05; C22F1/057; (IPC1-7): C22F1/05; C22C21/02
Attorney, Agent or Firm:
Keiichi Ota