公开(公告)号：US11462344B2

公开(公告)日：2022-10-04

申请号：US16526192

申请日：2019-07-30

Applicant: General Electric Company

Inventor： Raghavendra Rao Adharapurapu ,  Sudeep Pradhan Sadananda Rao ,  Reshma Saira Mathew ,  Min Zou

IPC: H01F1/047 ,  B33Y40/00 ,  B22F3/24 ,  H01F41/02 ,  B33Y40/20 ,  B22F10/64 ,  B22F10/50 ,  B33Y70/00 ,  H02K1/02 ,  H02K7/18

Abstract: A method of heat-treating an additively-manufactured ferromagnetic component is presented. The additively-manufactured ferromagnetic component includes a metal alloy having iron and cobalt. The method of heat-treating is performed such that a saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component. The heat-treated ferromagnetic component has a microstructure having an average grain size of substantially all grains in a range of about 0.1 micron to about 25 microns. A ferromagnetic component is also presented.

公开(公告)号：US10946444B2

公开(公告)日：2021-03-16

申请号：US15949551

申请日：2018-04-10

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Francis Johnson ,  Mohamed Osama ,  Anoop Kumar Jassal ,  Raghavendra Rao Adharapurapu

IPC: B22F3/105 ,  B33Y10/00 ,  B22F3/24 ,  H01F41/04 ,  B33Y40/00 ,  H01F1/20 ,  B33Y80/00 ,  C21D1/26 ,  H02K1/02 ,  H02K15/00 ,  H02K15/12 ,  C21D6/00 ,  C21D9/02 ,  H02K15/02 ,  H02K7/00 ,  C22C19/07 ,  C22C1/04 ,  B22F5/00 ,  C22C33/02

Abstract: A method of heat-treating an additively-manufactured ferromagnetic component is presented and a related ferromagnetic component is presented. A saturation flux density of a heat-treated ferromagnetic component is greater than a saturation flux density of an as-formed ferromagnetic component. The heat-treated ferromagnetic component is further characterized by a plurality of grains such that at least 25% of the plurality of grains have a median grain size less than 10 microns and 25% of the plurality of grains have a median grain size greater than 25 microns.

公开(公告)号：US20200080183A1

公开(公告)日：2020-03-12

申请号：US16469630

申请日：2017-11-30

Applicant: General Electric Company

Inventor： Raghavendra Rao Adharapurapu ,  Sanjay Kumar Sondhi ,  Biju Dasan ,  Laurent Cretegny ,  Joseph John Martell ,  Warren Davis Grossklaus, Jr.

IPC: C22F1/10 ,  C22C19/05

Abstract: A treatment process for treating an article including a superalloy having a degraded microstructure is presented. The process includes subjecting the article to a first heat-treatment including successively heating and cooling the article between a low-end temperature and a high-end temperature and subjecting the article to a second heat-treatment at a solution annealing temperature in a range of from about 80 degrees Fahrenheit below a gamma-prime solvus temperature of the superalloy to about 80 degrees Fahrenheit above the gamma-prime solvus temperature of the superalloy after performing the first heat-treatment. The low-end temperature is in a range of from about 1000 degrees Fahrenheit to about 1800 degrees Fahrenheit and the high-end temperature is in a range of from about 1900 degrees Fahrenheit to about 2250 degrees Fahrenheit.

公开(公告)号：US20180178303A1

公开(公告)日：2018-06-28

申请号：US15389779

申请日：2016-12-23

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Raghavendra Rao Adharapurapu ,  Michael Francis Xavier Gigliotti, JR. ,  David Edwin Budinger ,  Pazhayannur Ramanathan Subramanian ,  Jeffrey Jon Schoonover

IPC: B23K1/00 ,  B23K35/30 ,  C22C45/04 ,  F01D25/00 ,  F01D25/24 ,  F01D5/28 ,  F16B5/08

CPC classification number: B23K1/0018 ,  B23K35/3033 ,  B23K2101/001 ,  B23K2103/08 ,  C22C45/04 ,  F01D5/005 ,  F01D5/282 ,  F01D25/005 ,  F01D25/24 ,  F05D2230/237 ,  F05D2230/80 ,  F05D2300/175

Abstract: A nickel-based braze alloy composition is described, including nickel, about 1 weight % to about 5 weight % boron (B); and about 1 weight % to about 20 weight % germanium (Ge). The composition is free of any silicon. Superalloy articles that contains a crack or other type of void or gap filled with the nickel-based braze alloy composition are also described, along with methods for filling such a gap. Related articles of manufacture and brazing processes to join metal components are also disclosed.

公开(公告)号：US20130315659A1

公开(公告)日：2013-11-28

申请号：US13628548

申请日：2012-09-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Sundeep Kumar ,  Raghavendra Rao Adharapurapu ,  Mohamed Rahmane

IPC: B23K35/24 ,  H01M10/02 ,  C22C30/00 ,  B23K1/20 ,  C22C19/05

CPC classification number: B23K35/304 ,  B23K35/001 ,  B23K35/004 ,  B23K35/0233 ,  B23K35/0238 ,  B23K35/0244 ,  B23K35/025 ,  B23K35/3033 ,  B23K35/327 ,  B23K2101/18 ,  B23K2101/36 ,  B23K2101/38 ,  B23K2103/16 ,  B23K2103/18 ,  B23K2103/26 ,  B23K2103/52 ,  C04B37/006 ,  C04B37/026 ,  C04B2237/123 ,  C04B2237/124 ,  C04B2237/127 ,  C04B2237/343 ,  C04B2237/405 ,  C04B2237/70 ,  C22C9/06 ,  C22C19/05 ,  H01M2/0252 ,  H01M2/08 ,  H01M10/02 ,  H01M10/38 ,  H01M10/39 ,  H01M10/3963 ,  Y10T403/479

Abstract: A braze alloy composition is disclosed, containing nickel, about 5% to about 40% of at least one refractory metal selected from niobium, tantalum, or molybdenum; about 2% to about 32% chromium; and about 0.5% to about 10% of at least one active metal element. An electrochemical cell that includes two components joined to each other by such a braze composition is also described. A method for joining components such as those within an electrochemical cell is also described. The method includes the step of introducing a braze alloy composition between a first component and a second component to be joined, to form a brazing structure. In many instances, one component is formed of a ceramic, while the other is formed of a metal or metal alloy.

Abstract translation: 公开了一种钎焊合金组合物，其含有约5％至约40％的至少一种选自铌，钽或钼的难熔金属的镍; 约2％至约32％的铬; 和约0.5％至约10％的至少一种活性金属元素。 还描述了包括通过这种钎焊组合物彼此连接的两个部件的电化学电池。 还描述了用于接合诸如电化学电池内的部件的方法。 该方法包括将钎焊合金组合物引入到待接合的第一组分和第二组分之间以形成钎焊结构的步骤。 在许多情况下，一个部件由陶瓷形成，而另一个部件由金属或金属合金形成。