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公开(公告)号：US10006113B2
公开(公告)日：2018-06-26
申请号：US13590446
申请日：2012-08-21
申请人： Thomas DeMichael , Gopal Das , Michael A. Moulin
发明人： Thomas DeMichael , Gopal Das , Michael A. Moulin
摘要： A method for forming a part having a dual property microstructure includes the steps of: forming a blank having a narrow top portion and a wide base portion; heating the blank to an elevated temperature; and forming a dual property microstructure in the blank by cooling different portions of the blank at different cooling rates.
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公开(公告)号：US20140053958A1
公开(公告)日：2014-02-27
申请号：US13590446
申请日：2012-08-21
申请人： Thomas DeMichael , Gopal Das , Michael A. Moulin
发明人： Thomas DeMichael , Gopal Das , Michael A. Moulin
摘要： A method for forming a part having a dual property microstructure includes the steps of: forming a blank having a narrow top portion and a wide base portion; heating the blank to an elevated temperature; and forming a dual property microstructure in the blank by cooling different portions of the blank at different cooling rates.
摘要翻译： 一种形成具有双性质微结构的部件的方法包括以下步骤：形成具有窄顶部和宽基部的坯料; 将坯料加热至高温; 并通过以不同的冷却速率冷却坯料的不同部分，在坯料中形成双重性能微观结构。
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公开(公告)号：US07923127B2
公开(公告)日：2011-04-12
申请号：US11270103
申请日：2005-11-09
申请人： Gopal Das
发明人： Gopal Das
CPC分类号： C22F1/183 , C22C14/00 , Y10T29/49991 , Y10T428/12806 , Y10T428/12812
摘要： A process for producing sheets of γ-TiAl includes the steps of forming a melt of a γ-TiAl alloy; casting the γ-TiAl alloy to form an as-cast γ-TiAl alloy; encapsulating the as-cast γ-TiAl alloy to form an as-cast γ-TiAl alloy preform; and rolling the as-cast γ-TiAl alloy preform to form a sheet comprising γ-TiAl.
摘要翻译： 制备γ-TiAl片的方法包括形成γ-TiAl合金熔体的步骤; 铸造γ-TiAl合金以形成铸态γ-TiAl合金; 封装铸态γ-TiAl合金以形成铸态γ-TiAl合金预型体; 并轧制铸态γ-TiAl合金预制件以形成包含γ-TiAl的片材。
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公开(公告)号：US07565996B2
公开(公告)日：2009-07-28
申请号：US10957805
申请日：2004-10-04
申请人： Gopal Das
发明人： Gopal Das
CPC分类号： B23K20/02 , B23K2101/001
摘要： Systems and methods for transient liquid phase bonding are described herein. Embodiments of these systems and methods utilize sandwich interlayers to produce stronger, more homogeneous bonds than currently possible. These sandwich interlayers have a middle bonding layer sandwiched between two outer bonding layers. The middle bonding layer is a different composition, and may even be a different form, than the outer bonding layers. In embodiments, these sandwich interlayers may be used to join a single crystal material to a polycrystalline material to make a gas turbine engine component, such as an integrally bladed rotor.
摘要翻译： 本文描述了瞬态液相键合的系统和方法。 这些系统和方法的实施例利用夹层夹层来产生比目前可能的更强，更均匀的粘结。 这些夹层夹层具有夹在两个外部粘合层之间的中间粘合层。 中间结合层是不同于组成的，并且甚至可以是与外部粘合层不同的形式。 在实施例中，这些夹层夹层可用于将单晶材料连接到多晶材料以制造燃气涡轮发动机部件，例如整体叶片式转子。
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5.发明申请公开(公告)号：US20120048430A1
公开(公告)日：2012-03-01
申请号：US12870909
申请日：2010-08-30
申请人： Gopal Das
发明人： Gopal Das
CPC分类号： C22C14/00 , B21J1/00 , B21J1/02 , B21J1/06 , B21J5/002 , B21K3/04 , B23H1/00 , B23P15/02 , C22B9/04 , C22B9/20 , C22B34/1295 , C22F1/183
摘要： A process for manufacturing a turbine engine component comprises the steps of: casting ingots made of a gamma TiAl material using a double vacuum arc remelting casting technique; subjecting the cast ingots to a hot isostatic pressing to close porosity; forming at least one pancake of the gamma TiAl material by isothermally forging the hot isostatic pressed ingots; sectioning each pancake into a plurality of blanks; heat treating the blanks to produce a desired microstructure and mechanical properties; and machining the blanks into finished turbine engine components. A system for performing the process is also disclosed.
摘要翻译： 一种用于制造涡轮发动机部件的方法包括以下步骤：使用双真空电弧重熔铸造技术铸造由γTiAl材料制成的铸锭; 对铸锭进行热等静压，以密闭孔隙度; 通过等温锻造热等静压的锭，形成γTiAl材料的至少一个薄饼; 将每个煎饼切片成多个坯料; 热处理坯料以产生所需的微结构和机械性能; 并将坯料加工成成品的涡轮发动机部件。 还公开了一种用于执行该过程的系统。
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公开(公告)号：US20060083653A1
公开(公告)日：2006-04-20
申请号：US10969160
申请日：2004-10-20
申请人： Gopal Das
发明人： Gopal Das
IPC分类号： B22F3/15
CPC分类号： B22F3/15
摘要： Components produced by powder metallurgy techniques are described herein. Embodiments of these components have little or no porosity therein after processing. Embodiments of these components are created by creating a preform from a powder; creating a component from the preform; heat treating the component to create a predetermined microstructure therein; and then hot isostatic pressing the heat treated component to reduce any porosity therein. The components can then be machined to their final dimensions, if necessary.
摘要翻译： 本文描述了通过粉末冶金技术生产的组分。 这些组分的实施方案在加工后几乎没有孔隙率。 这些部件的实施例通过从粉末制造预成型件而产生; 从预制件创建一个组件; 对组分进行热处理以在其中产生预定的微结构; 然后热等静压压热处理组件以减少其中的任何孔隙率。 然后，如果需要，可将这些部件加工成其最终尺寸。
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公开(公告)号：US20100037994A1
公开(公告)日：2010-02-18
申请号：US12191375
申请日：2008-08-14
申请人： Gopal Das
发明人： Gopal Das
CPC分类号： C21D6/001 , C21D6/007 , C21D6/02 , C22C38/105
摘要： A method of processing a workpiece of maraging steel includes receiving a workpiece of maraging steel that has been subjected to thermomechanical processing at an austenite solutionizing temperature and then directly aging the workpiece of maraging steel at an aging temperature to form precipitates within a microstructure of the workpiece of maraging steel, without any intervening heat treatments between the thermomechanical processing and the direct aging.
摘要翻译： 一种加工马氏体时效钢的工件的方法包括：接收在奥氏体溶解温度下进行热机械加工的钢的马氏体时效工件，然后在老化温度下直接老化马氏体时效钢的工件，以在工件的微结构内形成析出物 在热机械加工和直接老化之间没有任何干预热处理。
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公开(公告)号：US20070107202A1
公开(公告)日：2007-05-17
申请号：US11270103
申请日：2005-11-09
申请人： Gopal Das
发明人： Gopal Das
CPC分类号： C22F1/183 , C22C14/00 , Y10T29/49991 , Y10T428/12806 , Y10T428/12812
摘要： A process for producing sheets of γ-TiAl includes the steps of forming a melt of a γ-TiAl alloy; casting the γ-TiAl alloy to form an as-cast γ-TiAl alloy; encapsulating the as-cast γ-TiAl alloy to form an as-cast γ-TiAl alloy preform; and rolling the as-cast γ-TiAl alloy preform to form a sheet comprising γ-TiAl.
摘要翻译： 制备γ-TiAl片的方法包括形成γ-TiAl合金熔体的步骤; 铸造γ-TiAl合金以形成铸态γ-TiAl合金; 封装铸态γ-TiAl合金以形成铸态γ-TiAl合金预型体; 并轧制铸态γ-TiAl合金预制件以形成包含γ-TiAl的片材。
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公开(公告)号：US20060071056A1
公开(公告)日：2006-04-06
申请号：US10957805
申请日：2004-10-04
申请人： Gopal Das
发明人： Gopal Das
IPC分类号： B23K35/12
CPC分类号： B23K20/02 , B23K2101/001
摘要： Systems and methods for transient liquid phase bonding are described herein. Embodiments of these systems and methods utilize sandwich interlayers to produce stronger, more homogeneous bonds than currently possible. These sandwich interlayers comprise a middle bonding layer sandwiched between two outer bonding layers. The middle bonding layer comprises a different composition, and may even comprise a different form, than the outer bonding layers. In embodiments, these sandwich interlayers may be used to join a single crystal material to a polycrystalline material to make a gas turbine engine component, such as an integrally bladed rotor.
摘要翻译： 本文描述了瞬态液相键合的系统和方法。 这些系统和方法的实施例利用夹层夹层来产生比目前可能的更强，更均匀的粘结。 这些夹层夹层包括夹在两个外部粘合层之间的中间粘合层。 中间结合层包含不同的组成，并且甚至可以包括与外部粘合层不同的形式。 在实施例中，这些夹层夹层可以用于将单晶材料连接到多晶材料以制造燃气涡轮发动机部件，例如整体叶片的转子。
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10.发明授权公开(公告)号：US08876992B2
公开(公告)日：2014-11-04
申请号：US12870909
申请日：2010-08-30
申请人： Gopal Das
发明人： Gopal Das
IPC分类号： C22F1/18 , B21J1/00 , B21J1/02 , B21J1/06 , B21J5/00 , B21K3/04 , B23H1/00 , B23P15/02 , C22B9/04 , C22B9/20 , C22B34/12 , C22C14/00
CPC分类号： C22C14/00 , B21J1/00 , B21J1/02 , B21J1/06 , B21J5/002 , B21K3/04 , B23H1/00 , B23P15/02 , C22B9/04 , C22B9/20 , C22B34/1295 , C22F1/183
摘要： A process for manufacturing a turbine engine component comprises the steps of: casting ingots made of a gamma TiAl material using a double vacuum arc remelting casting technique; subjecting the cast ingots to a hot isostatic pressing to close porosity; forming at least one pancake of the gamma TiAl material by isothermally forging the hot isostatic pressed ingots; sectioning each pancake into a plurality of blanks; heat treating the blanks to produce a desired microstructure and mechanical properties; and machining the blanks into finished turbine engine components. A system for performing the process is also disclosed.
摘要翻译： 一种用于制造涡轮发动机部件的方法包括以下步骤：使用双真空电弧重熔铸造技术铸造由γTiAl材料制成的铸锭; 对铸锭进行热等静压，以密闭孔隙度; 通过等温锻造热等静压压铸锭，形成γTiAl材料的至少一个薄饼; 将每个煎饼切片成多个坯料; 热处理坯料以产生所需的微结构和机械性能; 并将坯料加工成成品的涡轮发动机部件。 还公开了一种用于执行该过程的系统。
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