Title:
機械的特性が極めて高いAl-Zn-Mg-Cu合金製熱間加工製品、および航空機の構造要素
Document Type and Number:
Japanese Patent JP2005530032
Kind Code:
A
Abstract:
The present invention further relates to 7xxx alloys and products produced therewith that can be flat rolled, extruded or forged, as well as associated methods. Al-Zn-Mg-Cu alloys of the present invention preferably comprise (in mass percentage): a) Zn 8.3-14.0 Cu 0.3-2.0 Mg 0.5-4.5 Zr 0.03-0.15 Fe+Si<0.25 b) at least one element selected from the group consisting of Sc, Hf, La, Ti, Ce, Nd, Eu, Gd, Tb, Dy, Ho, Er, Y and Yb, where the content of each of the elements, if selected, is between 0.02 and 0.7%, c) remainder aluminum and inevitable impurities. The present invention further is directed to products wherein Mg/Cu>2.4 and (7.9-0.4 Zn)>(Cu+Mg)>(6.4-0.4 Zn). The disclosed products can be used for example, as structural members in aeronautical construction, especially as stiffeners capable for use in fuselages of civilian and other aircrafts as well as in related applications.
Inventors:
Ebert, frank
Sigri, Christoph
Varney, Timothy
Van der veen, shoelt
Sigri, Christoph
Varney, Timothy
Van der veen, shoelt
Application Number:
JP2003582321A
Publication Date:
October 06, 2005
Filing Date:
April 04, 2003
Export Citation:
Assignee:
PECHINEY RHENALU
International Classes:
B64C1/00; B64C1/06; B64D11/06; C22C21/10; C22F1/053; (IPC1-7): C22C21/10; B64C1/00; B64C1/06
Attorney, Agent or Firm:
Keiichi Ota