Title:
アルミニウム合金部材の製造方法
Document Type and Number:
Japanese Patent JP6406971
Kind Code:
B2
Abstract:
To provide: a method for producing an aluminum alloy member, which exhibits excellent formability during a forming process and is capable of producing an aluminum alloy member that has high strength and high proof stress; and an aluminum alloy member which is obtained by this method. A method for producing an aluminum alloy member according to the present invention is characterized by comprising: an extrusion step ST1 for subjecting an aluminum (Al) alloy which contains from 1.6% by mass to 2.6% by mass (inclusive) of magnesium (Mg), from 6.0% by mass to 7.0% by mass (inclusive) of zinc (Zn), 0.5% by mass or less of copper (Cu), from 0.01% by mass to 0.05% by mass (inclusive) of titanium (Ti) with the balance made up of aluminum (Al) and unavoidable impurities to hot extrusion; a cooling step ST2 for cooling the aluminum alloy after the extrusion; a strain processing step ST4 for introducing strain that miniaturizes precipitates precipitated in the crystal grains of the aluminum alloy after the cooling; and an aging step ST5 for aging the aluminum alloy by heating.
Inventors:
Akiko Inoue
Takayuki Takahashi
Hiroaki Sato
Takayuki Takahashi
Hiroaki Sato
Application Number:
JP2014212671A
Publication Date:
October 17, 2018
Filing Date:
October 17, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
C22F1/053; C22C21/10
Domestic Patent References:
| JP2012246555A | ||||
| JP2073941A | ||||
| JP2012207302A |
Foreign References:
| WO2012165086A1 | ||||
| WO2015182748A1 | ||||
| WO2008123184A1 | ||||
| US20060151075 |
Other References:
50周年記念事業実行委員会 記念出版部会,アルミニウムの製品と製造技術,社団法人軽金属学会,2001年10月31日,第399-407頁
40周年記念事業実行委員会 記念出版部会,アルミニウムの組織と性質,軽金属学会,1991年11月30日,第498-502頁
40周年記念事業実行委員会 記念出版部会,アルミニウムの組織と性質,軽金属学会,1991年11月30日,第498-502頁
Attorney, Agent or Firm:
Hiroaki Sakai
Jun Takamura
Jun Takamura