公开(公告)号：US10239156B2

公开(公告)日：2019-03-26

申请号：US15026474

申请日：2014-09-25

Applicant: United Technologies Corporation

Inventor： Shawn J. Gregg ,  Alexander Staroselsky ,  Gajawalli V. Srinivasan

IPC: F01D5/18 ,  B23K26/342 ,  B23K26/00 ,  B23K26/12 ,  B23K26/144 ,  B22F3/11 ,  B22F3/105 ,  B22F5/04 ,  B23K103/02 ,  B23K103/08 ,  B23K103/14 ,  F01D5/28 ,  B33Y10/00 ,  B33Y80/00

Abstract: A method of forming a metal component having different regions containing different grain sizes and in porosities is by additive manufacturing. The method includes spreading a layer of starting powder on a temperature controlled moveable platform in a heated chamber with atmosphere and temperature control. Selected areas of the powder are melted and solidified with a computer controlled focused energy beam. The cooled platform is then indexed down and the process repeated. The grain size of the melted and solidified region can be controlled by the cooling rate during solidification which, in turn is controlled by the temperature of the chamber and the temperature of the cooled moveable platform.

公开(公告)号：US08801372B2

公开(公告)日：2014-08-12

申请号：US13668733

申请日：2012-11-05

Applicant: United Technologies Corporation

Inventor： Jun Shi ,  Kevin E. Green ,  Shaoluo L. Butler ,  Gajawalli V. Srinivasan ,  Glenn N. Levasseur

IPC: F01D11/18

CPC classification number: F01D11/18 ,  F01D11/24 ,  F01D25/12 ,  F01D25/14 ,  F05D2300/21

Abstract: A shroud for a gas turbine engine includes a leading portion having a leading edge and a first set of circumferentially spaced slots at the leading edge that break up the leading portion into circumferentially spaced segments separated by the first set of slots, and a trailing portion adjacent to the leading portion. The trailing portion has a trailing edge.

Abstract translation: 用于燃气涡轮发动机的罩包括在前缘处具有前缘的前导部分和第一组周向间隔开的狭槽，其将引导部分分成由第一组狭槽分隔开的周向间隔的部分，并且相邻的后部部分 到领先部分。 尾部具有后缘。

公开(公告)号：US10376960B2

公开(公告)日：2019-08-13

申请号：US15409483

申请日：2017-01-18

Applicant: United Technologies Corporation

Inventor： John A. Sharon ,  Daniel V. Viens ,  Tahany Ibrahim El-Wardany ,  Gajawalli V. Srinivasan ,  Joseph J. Sangiovanni ,  Ranadip Acharya

IPC: B22F5/00 ,  B33Y10/00 ,  B33Y80/00 ,  B22F3/105 ,  B23K26/342 ,  F01D5/02 ,  B22F7/06 ,  B23K26/00 ,  B23K26/082 ,  B23K101/00 ,  B23K103/18

Abstract: An additively manufactured alloy component has a first portion formed of the alloy and having a first grain size, and a second portion formed of the alloy and having a second grain size smaller than the first grain size. In an embodiment, the alloy component is an alloy turbine disk, the first portion is a rim region of the alloy turbine disk, and the second portion is a hub region of the alloy turbine disk. The first and second grain sizes may be achieved by controllably varying the laser power and/or scan speed during additive manufacturing.

公开(公告)号：US20130094946A1

公开(公告)日：2013-04-18

申请号：US13668733

申请日：2012-11-05

Applicant: United Technologies Corporation

Inventor： Jun Shi ,  Kevin E. Green ,  Shaoluo L. Butler ,  Gajawalli V. Srinivasan ,  Glenn N. Levasseur

IPC: F01D11/18

CPC classification number: F01D11/18 ,  F01D11/24 ,  F01D25/12 ,  F01D25/14 ,  F05D2300/21

Abstract: A shroud for a gas turbine engine includes a leading portion having a leading edge and a first set of circumferentially spaced slots at the leading edge that break up the leading portion into circumferentially spaced segments separated by the first set of slots, and a trailing portion adjacent to the leading portion. The trailing portion has a trailing edge.

Abstract translation: 用于燃气涡轮发动机的罩包括在前缘处具有前缘的前导部分和第一组周向间隔开的狭槽，其将引导部分分成由第一组狭槽分隔开的周向间隔的部分，并且相邻的后部部分 到领先部分。 尾部具有后缘。

公开(公告)号：US20210139384A1

公开(公告)日：2021-05-13

申请号：US16678833

申请日：2019-11-08

Applicant: United Technologies Corporation

Inventor： Richard Wesley Jackson ,  Ying She ,  Gajawalli V. Srinivasan

IPC: C04B41/50 ,  C04B35/622

Abstract: Disclosed is a coated ceramic fiber including a zirconium interface coating layer deposited on the ceramic fiber, a zirconium dioxide interface coating layer adjacent to the zirconium interface coating layer, and an additional interface coating layer adjacent to the zirconium dioxide interface coating layer, wherein zirconium dioxide interface coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.

公开(公告)号：US10801108B2

公开(公告)日：2020-10-13

申请号：US15687625

申请日：2017-08-28

Applicant: United Technologies Corporation

Inventor： Ying She ,  Rajiv Ranjan ,  Zissis A. Dardas ,  Gajawalli V. Srinivasan ,  Lesia V. Protsailo

IPC: C23C16/32 ,  C23C16/455 ,  H01L21/02 ,  C23C16/04 ,  C04B35/628 ,  C04B35/565 ,  C04B35/80 ,  C01B32/956

Abstract: A method for fabricating a component according to an example of the present disclosure includes the steps of depositing a stoichiometric precursor layer onto a preform, and densifying the preform by depositing a matrix material onto the stoichiometric precursor layer. An alternate method and a component are also disclosed.

公开(公告)号：US20160214211A1

公开(公告)日：2016-07-28

申请号：US15026474

申请日：2014-09-25

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Shawn J. Gregg ,  Alexander Staroselsky ,  Gajawalli V. Srinivasan

IPC: B23K26/342 ,  F01D5/18 ,  B23K26/00 ,  B23K26/12 ,  B23K26/144

CPC classification number: B23K26/342 ,  B22F3/1055 ,  B22F3/11 ,  B22F5/04 ,  B22F2207/13 ,  B22F2207/17 ,  B23K26/0006 ,  B23K26/12 ,  B23K26/144 ,  B23K2103/02 ,  B23K2103/08 ,  B23K2103/14 ,  B33Y10/00 ,  B33Y80/00 ,  F01D5/18 ,  F01D5/28 ,  Y02P10/295

Abstract: A method of forming a metal component having different regions containing different grain sizes and in porosities is by additive manufacturing. The method includes spreading a layer of starting powder on a temperature controlled moveable platform in a heated chamber with atmosphere and temperature control. Selected areas of the powder are melted and solidified with a computer controlled focused energy beam. The cooled platform is then indexed down and the process repeated. The grain size of the melted and solidified region can be controlled by the cooling rate during solidification which, in turn is controlled by the temperature of the chamber and the temperature of the cooled moveable platform.

Abstract translation: 通过添加制造，形成具有不同晶粒尺寸和孔隙度不同区域的金属成分的方法。 该方法包括在加热室中的温度控制的可移动平台上涂覆起始粉末层，其中气氛和温度控制。 粉末的选定区域用计算机控制的聚焦能量束熔化和固化。 然后冷却的平台被索引并重复该过程。 熔化和固化区域的晶粒尺寸可以通过凝固过程中的冷却速度进行控制，而冷却速度又由室内的温度和冷却的可移动平台的温度控制。

公开(公告)号：US20190062913A1

公开(公告)日：2019-02-28

申请号：US15687625

申请日：2017-08-28

Applicant: United Technologies Corporation

Inventor： Ying She ,  Rajiv Ranjan ,  Zissis A. Dardas ,  Gajawalli V. Srinivasan ,  Lesia V. Protsailo

IPC: C23C16/455 ,  C23C16/04 ,  H01L21/02

CPC classification number: C23C16/45544 ,  C01B32/956 ,  C04B35/565 ,  C04B35/62868 ,  C04B35/806 ,  C04B2235/614 ,  C23C16/045 ,  H01L21/02529

Abstract: A method for fabricating a component according to an example of the present disclosure includes the steps of depositing a stoichiometric precursor layer onto a preform, and densifying the preform by depositing a matrix material onto the stoichiometric precursor layer. An alternate method and a component are also disclosed.

公开(公告)号：US11565977B2

公开(公告)日：2023-01-31

申请号：US16678852

申请日：2019-11-08

Applicant: United Technologies Corporation

Inventor： Richard Wesley Jackson ,  Ying She ,  Gajawalli V. Srinivasan

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/117 ,  C23C16/32 ,  C23C16/56 ,  D06M11/74 ,  D06M11/79

Abstract: Disclosed is a coated ceramic fiber including a silicon carbide coating layer adjacent to the ceramic fiber and a silicon dioxide coating layer adjacent to the silicon carbide coating layer, wherein the silicon dioxide coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.

公开(公告)号：US20210139381A1

公开(公告)日：2021-05-13

申请号：US16678852

申请日：2019-11-08

Applicant: United Technologies Corporation

Inventor： Richard Wesley Jackson ,  Ying She ,  Gajawalli V. Srinivasan

IPC: C04B35/80 ,  C23C16/32 ,  C23C16/56 ,  D06M11/74 ,  D06M11/79 ,  C04B35/628

Abstract: Disclosed is a coated ceramic fiber including a silicon carbide coating layer adjacent to the ceramic fiber and a silicon dioxide coating layer adjacent to the silicon carbide coating layer, wherein the silicon dioxide coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.