John A Newman

US Patent:

7449073, Nov 11, 2008

Filed:

Sep 7, 2005

Appl. No.:

11/220424

Inventors:

Jen C. Lin - Export PA, US
John M. Newman - Export PA, US
Paul E. Magnusen - Pittsburgh PA, US
Gary H. Bray - Murrysville PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C22C 21/12

US Classification:

148417, 420533, 420539

Abstract:

The invention provides a 2000 series aluminum alloy having enhanced damage tolerance, the alloy consisting essentially of about 3. 0-4. 0 wt % copper; about 0. 4-1. 1 wt % magnesium; up to about 0. 8 wt % silver; up to about 1. 0 wt % Zn; up to about 0. 25 wt % Zr; up to about 0. 9 wt % Mn; up to about 0. 5 wt % Fe; and up to about 0. 5 wt % Si, the balance substantially aluminum, incidental impurities and elements, said copper and magnesium present in a ratio of about 3. 6-5 parts copper to about 1 part magnesium. The alloy is suitable for use in wrought or cast products including those used in aerospace applications, particularly sheet or plate structural members, extrusions and forgings, and provides an improved combination of strength and damage tolerance.

US Patent:

7547366, Jun 16, 2009

Filed:

Jul 15, 2004

Appl. No.:

10/893003

Inventors:

Jen C. Lin - Export PA, US
John M. Newman - Export PA, US
Paul E. Magnusen - Pittsburgh PA, US
Gary H. Bray - Murrysville PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C22C 21/12

US Classification:

148417, 420533, 420539

Abstract:

The invention provides a 2000 series aluminum alloy having enhanced damage tolerance, the alloy consisting essentially of about 3. 0-4. 0 wt % copper; about 0. 4-1. 1 wt % magnesium; up to about 0. 8 wt % silver; up to about 1. 0 wt % Zn; up to about 0. 25 wt % Zr; up to about 0. 9 wt % Mn; up to about 0. 5 wt % Fe; and up to about 0. 5 wt % Si, the balance substantially aluminum, incidental impurities and elements, said copper and magnesium present in a ratio of about 3. 6-5 parts copper to about 1 part magnesium. The alloy is suitable for use in wrought or cast products including those used in aerospace applications, particularly sheet or plate structural members, extrusions and forgings, and provides an improved combination of strength and damage tolerance.

US Patent:

20080066833, Mar 20, 2008

Filed:

Sep 17, 2007

Appl. No.:

11/856631

Inventors:

Jen C. Lin - Export PA, US
Xinyan Yan - Murrysville PA, US
Wenping Zhang - Murrysville PA, US
James P. Moran - North Huntingdon PA, US
John M. Newman - Export PA, US
Ralph R. Sawtell - Gibsonia PA, US
Gerald D. Scott - Gibsonia PA, US
Michael Brandt - Murrysville PA, US
Bob R. Fors - Fruitport MI, US
Rick A. Borns - Spring Lake MI, US
Moustapha Mbaye - Ada MI, US

International Classification:

C22F 1/053
C22C 21/10

US Classification:

148549, 148417

Abstract:

The present invention provides an Al—Zn—Mg—Cu casting alloy that provides high strength for automotive and aerospace applications and optimized stress corrosion cracking resistance in highly corrosive and tensile environments. The inventive alloy composition includes about 3.5 wt. % to about 5.5 wt. % Zn; about 1.0 wt. % to about 3.0 wt. % Mg; about 0.5 wt. % to about 1.2 wt. % Cu; less than about 1.0 wt. % Si; less than about 0.30 wt. % Mn; less than about 0.30 wt. % Fe; and a balance of Al and incidental impurities.

US Patent:

20080283163, Nov 20, 2008

Filed:

May 14, 2007

Appl. No.:

11/748021

Inventors:

Gary H. Bray - Murrysville PA, US
Dhruba J. Chakrabarti - Export PA, US
Diana Denzer - Lower Burrell PA, US
Jen Lin - Export PA, US
John Newman - Export PA, US
Greg Venema - Bettendorf IA, US
Cagatay Yanar - Bethel Park PA, US

International Classification:

C22F 1/053
C22C 21/10

US Classification:

148690, 148417, 148439, 148701

Abstract:

Aluminum alloy products about 4 inches thick or less that possesses the ability to achieve, when solution heat treated, quenched, and artificially aged, and in parts made from the products, an improved combination of strength, fracture toughness and corrosion resistance, the alloy consisting essentially of: about 6.8 to about 8.5 wt. % Zn, about 1.5 to about 2.00 wt. % Mg, about 1.75 to about 2.3 wt. % Cu; about 0.05 to about 0.3 wt. % Zr, less than about 0.1 wt. % Mn, less than about 0.05 wt. % Cr, the balance Al, incidental elements and impurities and a method for making same. The invention alloy is useful in making structural members for commercial airplanes including, but not limited to, upper wing skins and stringers, spar caps, spar webs and ribs of either built-up or integral construction. The invention alloy may be aged by 2 or 3 step practices while exceeding the SCC requirements for applications for which the invention alloy is primarily intended. The flexibility of the invention in this regard is useful for its application in multi-alloy or multi-material systems joined by welding or bonding and subsequently aged.

US Patent:

20100037998, Feb 18, 2010

Filed:

May 14, 2008

Appl. No.:

12/152635

Inventors:

Gary H. Bray - Murrysville PA, US
Dhruba J. Chakrabarti - Woodside NY, US
Diana K. Denzer - Lower Burrell PA, US
Jen C. Lin - Export PA, US
John Newman - Export PA, US
Gregory B. Venema - Bettendorf IA, US
Cagatay Yanar - Bethel Park PA, US
Julien Boselli - Pittsburgh PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C22F 1/053
C22C 21/10

US Classification:

148690, 420532, 148695

Abstract:

Aluminum alloy products about 4 inches thick or less that possesses the ability to achieve, when solution heat treated, quenched, and artificially aged, and in parts made from the products, an improved combination of strength, fracture toughness and corrosion resistance, the alloy consisting essentially of: about 6.8 to about 8.5 wt. % Zn, about 1.5 to about 2.00 wt. % Mg, about 1.75 to about 2.3 wt. % Cu; about 0.05 to about 0.3 wt. % Zr, less than about 0.1 wt. % Mn, less than about 0.05 wt. % Cr, the balance Al, incidental elements and impurities and a method for making same. The instantly disclosed alloys are useful in making structural members for commercial airplanes including, but not limited to, upper wing skins and stringers, spar caps, spar webs and ribs of either built-up or integral construction.

US Patent:

20120055590, Mar 8, 2012

Filed:

Sep 8, 2011

Appl. No.:

13/228400

Inventors:

Rajeev G. Kamat - Murrysville PA, US
John M. Newman - Export PA, US
Ralph R. Sawtell - Gibsonia PA, US
Jen C. Lin - Export PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C22F 1/04
C22C 21/00

US Classification:

148551, 148695, 148437

Abstract:

New Al—Li alloy bodies and methods of producing the same are disclosed. The new Al—Li alloy bodies 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 Al—Li alloy bodies may realize improved strength and other properties.

US Patent:

20120261035, Oct 18, 2012

Filed:

Apr 17, 2012

Appl. No.:

13/449273

Inventors:

JEN C. LIN - Export PA, US
Xinyan Yan - Murrysville PA, US
Wenping Zhang - Murrysville PA, US
James P. Moran - Norh Huntingdon PA, US
John M. Newman - Export PA, US
Ralph R. Sawtell - Gibsonia PA, US
Gerald D. Scott - Gibsonia PA, US
Michael Brandt - Murrysville PA, US
Bob R. Fors - Fruitport MI, US
Rick A. Borns - Spring Lake MI, US
Moustapha Mbaye - Ada MI, US

International Classification:

C22F 1/053
C22C 21/16

US Classification:

148549, 148417

Abstract:

The present invention provides an Al—Zn—Mg—Cu casting alloy that provides high strength for automotive and aerospace applications and optimized stress corrosion cracking resistance in highly corrosive and tensile environments. The inventive alloy composition includes about 3.5 wt. % to about 5.5 wt. % Zn; about 1.0 wt. % to about 3.0 wt. % Mg; about 0.5 wt. % to about 1.2 wt. % Cu; less than about 1.0 wt. % Si; less than about 0.30 wt. % Mn; less than about 0.30 wt. % Fe; and a balance of Al and incidental impurities.

US Patent:

20130334091, Dec 19, 2013

Filed:

Feb 22, 2013

Appl. No.:

13/774810

Inventors:

John M. Newman - Export PA, US
Thomas N. Rouns - Pittsburgh PA, US
Raymond J. Kilmer - Lancaster PA, US

Assignee:

ALCOA INC. - Pittsburgh PA

International Classification:

C22F 1/047
C22C 21/08

US Classification:

2065246, 148551, 148439

Abstract:

Heat treatable aluminum alloy strips and methods for making the same are disclosed. The heat treatable aluminum alloy strips are continuously cast and quenched, with optional rolling occurring before and/or after quenching. After quenching, the heat treatable aluminum alloy strip is neither annealed nor solution heat treated.