21-08-2014 дата публикации
Номер: US20140230974A1
Автор:
Boysel Darl G.,
Bray Gary H.,
Bryant James Daniel,
Connor Brett P.,
Greco Mario,
Iasella Gino Norman,
Kamat Rajeev G.,
Lin Jen C.,
McNeish David J.,
Murtha Shawn J.,
Newman John M.,
Rioja Roberto J.,
Sawtell Ralph R.,
Sullivan Shawn P.
New magnesium-zinc aluminum alloy bodies and methods of producing the same are disclosed. The new magnesium-zinc aluminum alloy bodies generally include 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy bodies other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40, and may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new magnesium-zinc aluminum alloy bodies may realize improved strength and other properties. 137-. (canceled)38. A method comprising: '(i) wherein the preparing comprises solutionizing the aluminum alloy body;', '(a) preparing an aluminum alloy body for post-solutionizing cold working, the aluminum alloy body comprising 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy body other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40;'}(b) after the preparing step, cold working the aluminum alloy body, wherein the cold rolling induces at least 25% cold work in the aluminum alloy body; '(i) forming the aluminum alloy body into a predetermined shaped product, wherein, during the forming step, the aluminum alloy sheet is subjected to a temperature in the range of from at least 150° F. to below the recrystallization temperature of the aluminum alloy body.', '(c) after the cold working step, thermally treating the aluminum alloy body, wherein the thermally treating step comprises39. The method of claim 38 , wherein the thermally treating step comprises:heating the aluminum alloy body for a time and at a temperature sufficient to achieve a selected condition, wherein the heating step occurs before the forming step.40. The method of claim 39 , wherein the selected condition is an underaged condition claim 39 , and wherein ...
Подробнее
