公开(公告)号：JP2002053925A

公开(公告)日：2002-02-19

申请号：JP2001177711

申请日：2001-06-12

Applicant: ALCOA INC

Inventor： RIOJA ROBERTO J ,  WESTERLUND ROBERT W ,  ROBERTS ANNE E ,  CHAKRABARTI DHRUBA J ,  DENZER DIANA K ,  MORALES ANTHONY ,  MAGNUSEN PAUL E ,  VENEMA GREGORY B

IPC: B21B3/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C21/12 ,  C22C21/16 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/047 ,  C22F1/05 ,  C22F1/053 ,  C22F1/057

Abstract: PROBLEM TO BE SOLVED: To produce an aluminum alloy rolled thin sheet product having the combination of improved fatigue crack growing resistance, improved strength and fracture toughness and useful for the use for aerospace such as the airframe of aircraft and to provide its production method. SOLUTION: This aluminum alloy rolled thin sheet product has a microstructure specified by crystal grains having the average aspect ratio of the average length to width higher than about 4:1. By the control of the alloy composition, the limitation of the parameters in rolling and heat treatment, their combination or the like respectively as for an aluminum-copper-based alloy, an aluminum-magnesium-based alloy, an aluminum-magnesium-silicon-based alloy and an aluminum-zinc-based alloy, the prescribed aspect ratio, the microstructure having high anisotropy and improved quality characteristics are realized. More concretely, for developing a desired amount of precipitates, the composition of the alloy, the rolling method and the heat treating method are controlled.

公开(公告)号：DE60102870D1

公开(公告)日：2004-05-27

申请号：DE60102870

申请日：2001-06-12

Applicant: ALCOA INC

Inventor： RIOJA ROBERTO J ,  WESTERLUND ROBERT W ,  ROBERTS ANNE E ,  CHAKRABARTI DHRUBA J ,  DENZER DIANA K ,  MORALES ANTHONY ,  MAGNUSEN PAUL E ,  VENEMA GREGORY B

IPC: B21B3/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C21/12 ,  C22C21/16 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/047 ,  C22F1/05 ,  C22F1/053 ,  C22F1/057

Abstract: Aluminum sheet products having highly anisotropic grain microstructures and highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.

公开(公告)号：DE60102870T2

公开(公告)日：2005-03-31

申请号：DE60102870

申请日：2001-06-12

Applicant: ALCOA INC

Inventor： RIOJA ROBERTO J ,  WESTERLUND ROBERT W ,  ROBERTS ANNE E ,  CHAKRABARTI DHRUBA J ,  DENZER DIANA K ,  MORALES ANTHONY ,  MAGNUSEN PAUL E ,  VENEMA GREGORY B

IPC: B21B3/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C21/12 ,  C22C21/16 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/047 ,  C22F1/05 ,  C22F1/053 ,  C22F1/057

Abstract: Aluminum sheet products having highly anisotropic grain microstructures and highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.

公开(公告)号：CA2349793C

公开(公告)日：2009-09-22

申请号：CA2349793

申请日：2001-06-07

Applicant: ALCOA INC

Inventor： DENZER DIANA K ,  WESTERLUND ROBERT W ,  RIOJA ROBERTO J ,  CHAKRABARTI DHRUBA J ,  MORALES ANTHONY ,  MAGNUSEN PAUL E ,  VENEMA GREGORY B ,  ROBERTS ANNE E

IPC: B21B3/00 ,  C22C21/12 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C21/16 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/047 ,  C22F1/05 ,  C22F1/053 ,  C22F1/057

Abstract: Aluminum sheet products having highly anisotropic grain microstructures an d highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.

公开(公告)号：CA2349793A1

公开(公告)日：2001-12-12

申请号：CA2349793

申请日：2001-06-07

Applicant: ALCOA INC

Inventor： DENZER DIANA K ,  MORALES ANTHONY ,  ROBERTS ANNE E ,  VENEMA GREGORY B ,  MAGNUSEN PAUL E ,  CHAKRABARTI DHRUBA J ,  WESTERLUND ROBERT W ,  RIOJA ROBERTO J

IPC: B21B3/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C21/12 ,  C22C21/16 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/047 ,  C22F1/05 ,  C22F1/053 ,  C22F1/057

Abstract: Aluminum sheet products having highly anisotropic grain microstructures a nd highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.