公开(公告)号：US07144441B2

公开(公告)日：2006-12-05

申请号：US10613908

申请日：2003-07-03

Applicant: Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian ,  Robert John Zabala ,  Roger John Petterson ,  Eric Allen Ott ,  Srinivasa Range Gowda

Inventor： Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian ,  Robert John Zabala ,  Roger John Petterson ,  Eric Allen Ott ,  Srinivasa Range Gowda

IPC: B22F9/10

CPC classification number: B22D13/08 ,  B22F3/115 ,  B22F2998/00 ,  B22F2999/00 ,  C22C1/1042 ,  B22F9/10

Abstract: A method for forming a dispersion-strengthened material containing nanoparticles that are uniformly dispersed in a matrix phase. The method includes adding nanoparticles and a molten material to a container to form a pool within the container and rotating the container to create a convection vortex in the pool. The convection vortex is sufficient to cause the nanoparticles to be incorporated into the molten material so as to yield a molten composite material, and further causes the molten composite material to be ejected from the container. The molten composite material is then cooled to form a solid composite body comprising a uniform dispersion of the nanoparticles.

Abstract translation: 一种形成均匀分散在基质相中的含有纳米粒子的分散强化材料的方法。 该方法包括将纳米颗粒和熔融材料添加到容器中以在容器内形成池并旋转容器以在池中产生对流涡流。 对流涡流足以使纳米颗粒结合到熔融材料中以产生熔融的复合材料，并进一步使熔融的复合材料从容器中排出。 然后将熔融的复合材料冷却以形成包含纳米颗粒的均匀分散体的固体复合体。

公开(公告)号：US07051435B1

公开(公告)日：2006-05-30

申请号：US10459805

申请日：2003-06-13

Applicant: Pazhayannur Ramanathan Subramanian ,  James Anthony Ruud ,  Laurent Cretegny

Inventor： Pazhayannur Ramanathan Subramanian ,  James Anthony Ruud ,  Laurent Cretegny

IPC: B23P6/00

CPC classification number: B23P6/005 ,  B23K1/0018 ,  B23K1/008 ,  B23K1/19 ,  B23K1/20 ,  B23K11/0033 ,  B23K2101/001 ,  Y10T29/49318 ,  Y10T29/49336 ,  Y10T29/49734 ,  Y10T29/49737

Abstract: A process for repairing a turbine component comprises overlaying a preform of a brazing material onto a surface of the turbine component, wherein the surface comprises a damaged portion; securing the preform of a brazing material to the surface; and heating the turbine component to a temperature effective to form a brazed joint between the brazing material and the turbine component. Also disclosed is a repaired turbine component repaired by the process.

Abstract translation: 修复涡轮机部件的过程包括将钎焊材料的预成型件覆盖在涡轮部件的表面上，其中所述表面包括损坏部分; 将钎焊材料的预成型件固定到表面; 并且将所述涡轮机部件加热到有效地在所述钎焊材料和所述涡轮部件之间形成钎焊接头的温度。 还公开了通过该过程修复的修理的涡轮机部件。

公开(公告)号：US20130160967A1

公开(公告)日：2013-06-27

申请号：US13336470

申请日：2011-12-23

Applicant: Akane Suzuki ,  Stephen Joseph Balsone ,  Andrew John Elliott ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Roger John Petterson ,  Stephen Francis Rutkowski ,  Pazhayannur Ramanathan Subramanian

Inventor： Akane Suzuki ,  Stephen Joseph Balsone ,  Andrew John Elliott ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Roger John Petterson ,  Stephen Francis Rutkowski ,  Pazhayannur Ramanathan Subramanian

IPC: B22D27/04 ,  B22D25/02 ,  B22D27/02

CPC classification number: B22D27/04

Abstract: Methods for casting a metallic material to form a component are described. The component can be a superalloy-containing turbine part, for example. The general method includes the step of pouring the metallic material, in molten form, into an investment mold; and then rapidly immersing the entire investment mold into a bath that contains a low-melting liquid coolant metal, so as to achieve substantially uniform, multi-directional heat transfer out of the molten material. The molten material that solidifies to form the component is characterized by a fine-grained, equiaxed grain structure. Related embodiments include the use of two ingots that constitute the superalloy material. One ingot includes the oxygen-reactive elements, and is prepared by a vacuum-melting technique. The other ingot includes the remainder of the elements, and can be prepared by a number of techniques, such as air-melting processes.

Abstract translation: 描述用于铸造金属材料以形成部件的方法。 该组件例如可以是含有超合金的涡轮机部件。 通常的方法包括以熔融形式将金属材料倒入投资模具中的步骤; 然后将整个投资模具快速浸入含有低熔点液体冷却剂金属的浴中，从而实现从熔融材料中的大致均匀的多方向热传递。 凝固形成组分的熔融材料的特征在于细晶粒等轴晶粒结构。 相关实施例包括使用构成超级合金材料的两个锭。 一个锭包括氧反应元素，并通过真空熔融技术制备。 另一个锭包括剩余的元素，并且可以通过许多技术制备，例如空气熔化过程。

公开(公告)号：US07981520B2

公开(公告)日：2011-07-19

申请号：US12238675

申请日：2008-09-26

Applicant: Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

Inventor： Bernard Patrick Bewlay ,  Pazhayannur Ramanathan Subramanian ,  Joseph David Rigney ,  Richard DiDomizio ,  Voramon Supatarawanich Dheeradhada

IPC: B32B15/01 ,  C22C27/02

CPC classification number: B32B15/01 ,  Y10T428/12611 ,  Y10T428/12674 ,  Y10T428/12743 ,  Y10T428/12806 ,  Y10T428/12819

Abstract: A coating suitable for use as protective oxide-forming coatings on Nb-based substrates, and particularly monolithic niobium-based alloys, exposed to high temperatures and oxidative environments. The coating contains aluminum, may further contain silicon, and optionally contains niobium, titanium, hafnium, and/or chromium, which in combination form one or more intermetallic phases that promote the formation of a slow-growing oxide scale. The intermetallic phases may be M(Al,Si)3, M5(Al,Si)3, and/or M3Si5Al2 where M is niobium, titanium, hafnium, and/or chromium.

Abstract translation: 适合用作Nb基基材上的保护性氧化物形成涂层的涂层，特别是暴露在高温和氧化环境下的整体式铌基合金。 该涂层含有铝，还可以含有硅，并且任选地含有铌，钛，铪和/或铬，它们组合形成促进形成缓慢生长氧化皮的一个或多个金属间相。 金属间相可以是M（Al，Si）3，M5（Al，Si）3和/或M3Si5Al2，其中M是铌，钛，铪和/或铬。

公开(公告)号：US07919151B2

公开(公告)日：2011-04-05

申请号：US11610542

申请日：2006-12-14

Applicant: Tao Deng ,  Pazhayannur Ramanathan Subramanian ,  Ming Feng Hsu ,  Yuk-Chiu Lau ,  Margaret L. Blohm ,  Wayne Charles Hasz ,  Nitin Bhate ,  Kripa Kiran Varanasi ,  Gregory Allen O'Neil

Inventor： Tao Deng ,  Pazhayannur Ramanathan Subramanian ,  Ming Feng Hsu ,  Yuk-Chiu Lau ,  Margaret L. Blohm ,  Wayne Charles Hasz ,  Nitin Bhate ,  Kripa Kiran Varanasi ,  Gregory Allen O'Neil

IPC: C23C26/00 ,  C23C26/02 ,  C23C30/00

CPC classification number: B05D5/083 ,  B05D1/60 ,  C23C24/08 ,  C23C24/10

Abstract: The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.

Abstract translation: 本发明提供了具有耐湿表面的制品的制造方法。 该方法包括提供基板。 该方法还包括将涂料混合物设置在基材的表面上，其中涂料混合物包括钎焊材料和提供纹理的材料。 该方法还包括加热钎焊材料以将纹理提供材料粘合到基底的表面以形成具有耐湿表面的制品。

公开(公告)号：US07784667B2

公开(公告)日：2010-08-31

申请号：US11386998

申请日：2006-03-23

Applicant: Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

Inventor： Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

IPC: B23K20/12

CPC classification number: B23K20/125 ,  B23K20/1215 ,  B23K20/1255 ,  B23K20/128

Abstract: The present invention provides a friction stir welding apparatus operable for welding one or more metals, metal alloys, or other materials, and a method for friction stir welding. The friction stir welding apparatus includes a pin tool holder, a shoulder having a surface coupled to the pin tool holder, and a pin tool coupled to the pin tool holder, the pin tool at least partially protruding from the surface of the shoulder, wherein the pin tool is made of a consumable pin tool material. The method includes introducing the pin tool into a workpiece; traversing the pin tool along a joint to be welded on the workpiece; and substantially continuously feeding the pin tool into the weld joint as it is traversed along the joint, thereby incorporating at least a portion of the consumable pin tool material into the volume of the joint to be welded.

Abstract translation: 本发明提供了可操作用于焊接一种或多种金属，金属合金或其它材料的摩擦搅拌焊接装置，以及用于摩擦搅拌焊接的方法。 摩擦搅拌焊接装置包括销工具保持器，具有联接到销工具保持器的表面的肩部和联接到销工具保持器的销工具，销工具至少部分地从肩部的表面突出，其中， 销钉工具由消耗性销钉工具材料制成。 该方法包括将销工具引入工件; 沿着要焊接在工件上的接头穿过销钉工具; 并且当所述销工具沿着所述接头穿过时，将所述销工具基本上连续地供给到所述焊接接头中，从而将所述可消耗的销工具材料的至少一部分结合到待焊接的接头的体积中。

公开(公告)号：US20080145528A1

公开(公告)日：2008-06-19

申请号：US11610542

申请日：2006-12-14

Applicant: Tao Deng ,  Pazhayannur Ramanathan Subramanian ,  Ming Feng Hsu ,  Yuk-Chiu Lau ,  Margaret L. Blohm ,  Wayne Charles Hasz ,  Nitin Bhate ,  Kripa Kiran Varanasi ,  Gregory Allen O'Neil

Inventor： Tao Deng ,  Pazhayannur Ramanathan Subramanian ,  Ming Feng Hsu ,  Yuk-Chiu Lau ,  Margaret L. Blohm ,  Wayne Charles Hasz ,  Nitin Bhate ,  Kripa Kiran Varanasi ,  Gregory Allen O'Neil

IPC: B05D3/02 ,  B64C1/00

CPC classification number: B05D5/083 ,  B05D1/60 ,  C23C24/08 ,  C23C24/10

Abstract: The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.

Abstract translation: 本发明提供了具有耐湿表面的制品的制造方法。 该方法包括提供基板。 该方法还包括将涂料混合物设置在基材的表面上，其中涂料混合物包含钎焊材料和提供纹理的材料。 该方法还包括加热钎焊材料以将纹理提供材料粘合到基底的表面以形成具有耐湿表面的制品。

公开(公告)号：US20080142122A1

公开(公告)日：2008-06-19

申请号：US11612743

申请日：2006-12-19

Applicant: Bernard Patrick Bewlay ,  Richard DiDomizio ,  Pazhayannur Ramanathan Subramanian ,  Voramon Supatarawanich Dheeradhada ,  Joseph David Rigney ,  Ramgopal Darolia

Inventor： Bernard Patrick Bewlay ,  Richard DiDomizio ,  Pazhayannur Ramanathan Subramanian ,  Voramon Supatarawanich Dheeradhada ,  Joseph David Rigney ,  Ramgopal Darolia

IPC: C23C22/05 ,  C22C27/02

CPC classification number: C22F1/18 ,  C22C27/02 ,  C23C8/12 ,  C23C10/20 ,  C23C12/02 ,  C23C14/06 ,  C23C16/30

Abstract: Niobium silicide articles are described. They include a surface region enriched with at least about 25 atom % germanium, which can enhance the properties of the article. Methods for preparing these articles are described as well. According to one method, an article is formed from a niobium silicide composite material which contains a selected amount of germanium. The article is then heat-treated under conditions sufficient to increase the level of germanium in the surface region to at least about 25 atom %, based on the total composition of the surface region. In another embodiment, a germanium-containing material is applied over a niobium-silicide article, and then diffused into the surface region of the article by way of a heat treatment.

Abstract translation: 描述了铌硅化物制品。 它们包括富含至少约25原子％锗的表面区域，其可以增强制品的性质。 还描述了制备这些制品的方法。 根据一种方法，由含有选定量的锗的铌硅化物复合材料形成制品。 然后将该制品在足以使表面区域中的锗水平升至至少约25原子％的条件下进行热处理，基于表面积的总组成。 在另一个实施方案中，将含锗材料涂覆在铌硅化物制品上，然后通过热处理扩散到制品的表面区域。

公开(公告)号：US20080099533A1

公开(公告)日：2008-05-01

申请号：US11554751

申请日：2006-10-31

Applicant: Timothy Hanlon ,  Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

Inventor： Timothy Hanlon ,  Pazhayannur Ramanathan Subramanian ,  Earl Claude Helder ,  Timothy Joseph Trapp

IPC: B23K20/12

CPC classification number: B23K20/122 ,  B23K20/126 ,  B23K37/06 ,  B29C65/0681 ,  B29C65/08 ,  B29C65/1425 ,  B29C65/16 ,  B29C65/18 ,  B29C65/224 ,  B29C65/26 ,  B29C66/0242 ,  B29C66/034 ,  B29C66/1142 ,  B29C66/343 ,  B29C66/43 ,  B29C66/73921 ,  B29C66/8122 ,  B29C66/81264 ,  B29C66/81429 ,  B29C66/8167 ,  B29C66/836 ,  B29C66/91212 ,  B29C66/91216 ,  B29C66/91221 ,  B29C66/91411 ,  B29C66/91421 ,  B29C66/91645 ,  B29C66/91935 ,  B29C66/961 ,  B29K2101/12 ,  B29K2905/12

Abstract: A method for creating a solid state joint is disclosed. The method includes providing an adjoining apparatus that includes a pin tool, a backing plate and a thermal control plate disposed below the backing plate. The method also includes rotating the pin tool and traversing the pin tool relative to a workpiece along a joint to be welded on the workpiece. The method further includes manipulating the temperature of the pin tool and the backing plate in order to control the temperature and rate of change of temperature experienced by the workpiece at a weld affected zone at the joint. The method also includes maintaining a user chosen temperature differential between the weld affected zone and the backing plate via the thermal control plate.

Abstract translation: 公开了一种用于形成固态接头的方法。 该方法包括提供邻近的装置，其包括销工具，背板和设置在背板下方的热控制板。 该方法还包括使针工具旋转并沿着要焊接在工件上的接头相对于工件横穿销钉工具。 该方法还包括操纵销工具和背板的温度，以便控制工件在接头处的焊接影响区域经历的温度和温度变化率。 该方法还包括通过热控制板维持用户在焊接受影响区域和背板之间选择的温度差。

公开(公告)号：US08608877B2

公开(公告)日：2013-12-17

申请号：US12844277

申请日：2010-07-27

Applicant: Richard DiDomizio ,  Judson Sloan Marte ,  Pazhayannur Ramanathan Subramanian

Inventor： Richard DiDomizio ,  Judson Sloan Marte ,  Pazhayannur Ramanathan Subramanian

IPC: C22F1/10 ,  C22F1/16 ,  C22C30/00 ,  C22C19/03 ,  C22C19/05

CPC classification number: C22C19/056 ,  C22C19/03 ,  C22C19/05 ,  C22C19/07 ,  C22F1/10

Abstract: Articles that include a material that has L12-structured gamma-prime phase precipitates within a matrix phase at a concentration of at least 20% by volume are disclosed. The gamma-prime phase precipitates are less than 1 micrometer in size. The material also has A3-structured eta phase precipitates distributed within the matrix phase at a concentration in the range from about 1% to about 25% by volume. The articles may be formed by mechanically working a workpiece that has at least about 40% nickel, about 1.5% to about 8% titanium, and about 1.5% to about 4.5% aluminum. The workpiece may be worked at a temperature below a solvus temperature of the eta phase; and then heat treated at a temperature sufficient to dissolve any gamma prime phase present in the workpiece but below the solvus temperature of the eta phase.

Abstract translation: 公开了包含具有至少20体积％浓度的基质相中具有L12结构的γ-原相的材料的制品。 γ相相析出物的尺寸小于1微米。 该材料还具有分布在基质相中的A3结构的η相析出物，浓度范围为约1体积％至约25体积％。 制品可以通过机械加工具有至少约40％的镍，约1.5％至约8％的钛和约1.5％至约4.5％的铝的工件来形成。 可以在低于eta相的solvus温度的温度下加工工件; 然后在足以溶解存在于工件中但低于eta相的溶质温度的任何γ'相的温度下进行热处理。