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    Nickel-Based Superalloys and Articles
    24.
    发明申请
    Nickel-Based Superalloys and Articles 审中-公开
    镍基超合金和制品

    公开(公告)号：US20110076182A1

    公开(公告)日：2011-03-31

    申请号：US12571013

    申请日：2009-09-30

    Applicant: Akane Suzuki ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

    Inventor： Akane Suzuki ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

    IPC: C22C19/05 ,  B22D27/04

    CPC classification number: C22C19/057

    Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep resistance substantially equivalent to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 μm, if need be, so that further improvements in mechanical properties in the articles can be seen.

    Abstract translation: 提供无铼镍基合金。 更具体地，合金包括优选的含量和元素比例，以便在不使用铼的情况下实现γ基质相和γ初始沉淀物的良好的高温强度以及良好的耐环境性。 当铸造和定向凝固成单晶形式时，合金具有基本上等同于含铼单晶合金的抗蠕变性。 此外，如果需要，合金可以通过定向固化加工成单晶形状或柱状结构的制品，包括细小的枝晶臂间距，例如小于400μm，从而可以看到制品中机械性能的进一步改善。

    Nickel-Based Superalloys and Articles
    25.
    发明申请
    Nickel-Based Superalloys and Articles 审中-公开
    镍基超合金和制品

    公开(公告)号：US20110076181A1

    公开(公告)日：2011-03-31

    申请号：US12570861

    申请日：2009-09-30

    Applicant: Akane Suzuki ,  Michael Francis Xavier Gigliotti, Jr. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

    Inventor： Akane Suzuki ,  Michael Francis Xavier Gigliotti, Jr. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

    IPC: C22C19/05 ,  B22D27/04

    CPC classification number: C22C19/057 ,  C30B11/00 ,  C30B28/06 ,  C30B29/52 ,  C30B29/605

    Abstract: Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit oxidation resistance better than or comparable to rhenium-bearing single-crystal alloys, and creep rupture life comparable to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 μm, if need be, so that further improvements in mechanical properties in the articles can be seen.

    Abstract translation: 提供无铼镍基合金。 更具体地，合金包括优选的含量和元素比例，以便在不使用铼的情况下实现γ基质相和γ初始沉淀物的良好的高温强度以及良好的耐环境性。 当铸造和定向凝固成单晶形式时，合金表现出比具有铼承载单晶合金更好或可媲美的抗氧化性，以及与含铼单晶合金相当的蠕变断裂寿命。 此外，如果需要，合金可以通过定向固化加工成单晶形状或柱状结构的制品，包括细小的枝晶臂间距，例如小于400μm，从而可以看到制品中机械性能的进一步改善。

    METHOD OF FORMING A STRUCTURAL COMPONENT HAVING A NANO SIZED/SUB-MICRON HOMOGENEOUS GRAIN STRUCTURE
    28.
    发明申请
    METHOD OF FORMING A STRUCTURAL COMPONENT HAVING A NANO SIZED/SUB-MICRON HOMOGENEOUS GRAIN STRUCTURE 失效
    形成具有纳米尺寸/亚微米均质颗粒结构的结构组分的方法

    公开(公告)号：US20070261458A1

    公开(公告)日：2007-11-15

    申请号：US11285853

    申请日：2005-11-22

    Applicant: Ramkumar Oruganti ,  Pazhayannur Ramanathan Subramanian ,  Judson Marte

    Inventor： Ramkumar Oruganti ,  Pazhayannur Ramanathan Subramanian ,  Judson Marte

    IPC: B21C23/00

    CPC classification number: B21C23/002 ,  B21C23/001 ,  B21C23/22

    Abstract: A method of making nano/sub-micron sized grains in a work piece material having a lateral side has the steps of providing a die. The die has an entrance channel with a longitudinal axis and an exit channel. The entrance channel and the exit channel are connected to one another to form an angle. The method has the step of providing a first sacrificial material with a complementary size to the work piece and placing the sacrificial first material and the work piece in an entrance channel. The first sacrificial material and the work piece are aligned with the longitudinal axis. The method has the step of extruding the combination of the first sacrificial material, and the work piece through the intersection of the entrance and the exit channels. The resulting shear deformation forms the nano/sub-micron sized grains in the work piece. This configuration reduces frictional effects thereby producing homogenous nano grain structure. This configuration reduces applied load and enables equal channel angular extrusion of thin sheets.

    Abstract translation: 在具有侧面的工件材料中制造纳米/亚微米尺寸的颗粒的方法具有提供模具的步骤。 模具具有纵向轴线和出口通道的入口通道。 入口通道和出口通道彼此连接形成一个角度。 该方法具有提供具有与工件互补的尺寸的第一牺牲材料并将牺牲的第一材料和工件放置在入口通道中的步骤。 第一牺牲材料和工件与纵向轴线对齐。 该方法具有通过入口和出口通道的交叉部分挤出第一牺牲材料和工件的组合的步骤。 所产生的剪切变形在工件中形成纳米/亚微米尺寸的颗粒。 这种结构降低摩擦效应，从而产生均匀的纳米晶粒结构。 该配置减少了施加的负载，并实现了薄板的等通道角挤压。

    Method and apparatus for casting near-net shape articles
    29.
    发明授权
    Method and apparatus for casting near-net shape articles 有权
    铸造近净形物品的方法和装置

    公开(公告)号：US06676381B2

    公开(公告)日：2004-01-13

    申请号：US10063249

    申请日：2002-04-03

    Applicant: Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson ,  Paul Leonard Dupree ,  Bernard Patrick Bewlay ,  Theodore McCall Evenden

    Inventor： Pazhayannur Ramanathan Subramanian ,  Melvin Robert Jackson ,  Paul Leonard Dupree ,  Bernard Patrick Bewlay ,  Theodore McCall Evenden

    IPC: F01D528

    CPC classification number: B22D27/04 ,  F01D5/28 ,  F05D2230/21 ,  F05D2300/13 ,  Y02T50/67 ,  Y02T50/672

    Abstract: A method and apparatus for casting a near-net-shape article from a high temperature material, such as a refractory metal intermetallic composite material. The apparatus includes: a means for forming a molten material comprising at least one of a metal and an alloy; a means for pouring the molten material; a mold assembly comprising a solid shell having a face coat interposed between the solid shell and molten material; and a heater assembly for maintaining the solid shell at a temperature. The molten material solidifies within the solid shell to form a near-net shape of the article. The near-net shape article may be a turbine assembly component, such as, but not limited to, a vane or airfoil.

    Abstract translation: 一种用于从诸如难熔金属金属间复合材料的高温材料铸造近网状制品的方法和装置。 该装置包括：用于形成包括金属和合金中的至少一种的熔融材料的装置; 用于浇注熔融材料的装置; 一种模具组件，其包括固体外壳，其具有介于所述固体壳和熔融材料之间的表面涂层; 以及用于将固体壳保持在一个温度下的加热器组件。 熔融的材料在固体壳体内固化以形成物品的近净形状。 近净形状制品可以是涡轮机组件部件，例如但不限于叶片或翼型件。

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