公开(公告)号：US20070000583A1

公开(公告)日：2007-01-04

申请号：US10334388

申请日：2002-12-31

申请人： Roberto Rioja ,  Robert Westerlund ,  Anne Roberts ,  Dhruba Chakrabarti ,  Diana Denzer ,  Anthony Morales ,  Paul Magnusen ,  Gregory Venema

发明人： Roberto Rioja ,  Robert Westerlund ,  Anne Roberts ,  Dhruba Chakrabarti ,  Diana Denzer ,  Anthony Morales ,  Paul Magnusen ,  Gregory Venema

IPC分类号： C22F1/04

CPC分类号： C22F1/057 ,  C22C21/02 ,  C22C21/08 ,  C22C21/10 ,  C22C21/16 ,  C22F1/04 ,  C22F1/05 ,  C22F1/053

摘要： 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.

摘要翻译： 公开了具有高度各向异性颗粒微结构和高度纹理化的结晶微结构的铝板产品。 产品具有改进的强度和改善的抗疲劳裂纹生长性能，以及其它有利的性能，例如改进的强度和断裂韧性的组合。 片材产品可用于航空航天和其他应用，特别是飞机机身。

公开(公告)号：US20050269000A1

公开(公告)日：2005-12-08

申请号：US11003650

申请日：2004-12-03

申请人： Diana Denzer ,  Dhruba Chakrabarti ,  John Liu ,  Lynn Oswald ,  Robert Westerlund

发明人： Diana Denzer ,  Dhruba Chakrabarti ,  John Liu ,  Lynn Oswald ,  Robert Westerlund

IPC分类号： C22F1/053 ,  C22F1/04

CPC分类号： C22F1/053

摘要： This invention relates to a method for artificially aging 7000 Series Al aerospace alloys to impart improved strength and/or corrosion resistance performance thereto. The method purposefully adds a second aging step or stage to a one-step tempering, or a third step/stage to a low-high, two-step aging operation. The added step/stage extends at about 225-275° F. for about 3-24 hours. More preferably, the added stage extends at about 250° F. for about 6 hours or more.

摘要翻译： 本发明涉及人造老化7000系列铝合金航空航天合金的方法，以赋予其改善的强度和/或耐腐蚀性能。 该方法有目的地将第二老化步骤或阶段添加到一步回火，或第三阶段/阶段到低 - 高两步老化操作。 添加的步骤/阶段在约225-275°F下延伸约3-24小时。 更优选地，加入的阶段在约250°F下延伸约6小时或更长时间。

公开(公告)号：US20060083654A1

公开(公告)日：2006-04-20

申请号：US11287744

申请日：2005-11-28

申请人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

发明人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

IPC分类号： C22C21/10

CPC分类号： C22F1/053 ,  B22D17/2209 ,  C22C21/10

摘要： Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg≦(Cu+0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the three stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.

公开(公告)号：US20050150579A1

公开(公告)日：2005-07-14

申请号：US11074337

申请日：2005-03-07

申请人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

发明人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

IPC分类号： C22C21/10 ,  C22F1/00 ,  C22F1/053

CPC分类号： C22F1/053 ,  B22D17/2209 ,  C22C21/10

摘要： Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg≦(Cu+0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the three stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.

公开(公告)号：US20050257865A1

公开(公告)日：2005-11-24

申请号：US11052392

申请日：2005-02-07

申请人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

发明人： Dhruba Chakrabarti ,  John Liu ,  Jay Goodman ,  Gregory Venema ,  Ralph Sawtell ,  Cynthia Krist ,  Robert Westerlund

IPC分类号： C22C21/10 ,  C22F1/00 ,  C22F1/053

CPC分类号： C22F1/053 ,  B22D17/2209 ,  C22C21/10

摘要： Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg≦(Cu+0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the three stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.

公开(公告)号：US20060076093A1

公开(公告)日：2006-04-13

申请号：US11291241

申请日：2005-11-30

申请人： William Bennon ,  Vivek Sample ,  Dhruba Chakrabarti

发明人： William Bennon ,  Vivek Sample ,  Dhruba Chakrabarti

IPC分类号： C22F1/04

CPC分类号： C22F1/04 ,  C22F1/047 ,  C22F1/053

摘要： The present invention provides a mathematical approach to constructing a model of artificially aging to accurately calculate the value of a property in an aluminum alloy product achieved by aging the alloy. The method includes developing a formula having two independent time and temperature evolving expressions, aging the product to achieve the property by heating the product over an aging period determined by the formula and terminating the heating when the property is achieved according to a mathematical formula. The property is calculated as a function of time and product temperature measured over the aging period. Calculation of the property includes integration of the thermal effects on the product over the entire aging period.

摘要翻译： 本发明提供了构造人造时效模型的数学方法，以精确计算通过老化合金而获得的铝合金产品的性能值。 该方法包括开发具有两个独立的时间和温度演变表达式的公式，使产物老化，以通过在由公式确定的老化周期下加热产物来实现该性能，并且当根据数学公式实现该性能时终止加热。 该属性是根据老化期间测量的时间和产品温度的函数计算的。 性能的计算包括在整个老化期间对产品的热效应的整合。

公开(公告)号：US20060000094A1

公开(公告)日：2006-01-05

申请号：US11138589

申请日：2005-05-26

申请人： Carl Garesché ,  Dhruba Chakrabarti ,  Gregory Nowoslawski ,  Robert Fecke ,  Matthew Brest

发明人： Carl Garesché ,  Dhruba Chakrabarti ,  Gregory Nowoslawski ,  Robert Fecke ,  Matthew Brest

IPC分类号： B21K1/38 ,  B60B21/00

CPC分类号： C22F1/053 ,  B21K1/38 ,  C22C21/10 ,  Y10T29/49524 ,  Y10T29/49529

摘要： A method of making a forged aluminum vehicle wheel includes forging a low copper bearing 7000 series aluminum alloy into a wheel workpiece followed by initial cooling and machining and surface treatment. Aging which may be natural aging, artificial aging or both may be provided after cooling and before or after machining. Corresponding forged aluminum wheels are disclosed. The low copper bearing 7000 series forged aluminum wheel has superior fatigue properties. An alloy suitable for use in the method and wheel is disclosed.

摘要翻译： 制造锻造铝车轮的方法包括将低铜轴承7000系列铝合金锻造成车轮工件，然后进行初始冷却和机械加工和表面处理。 可以在冷却之后和加工前或之后提供老化，其可以是天然老化，人造老化或两者。 公开了相应的锻造铝轮。 低铜轴承7000系列锻造铝合金轮具有优异的疲劳性能。 公开了一种适用于该方法和车轮的合金。