公开(公告)号：US20230373002A1

公开(公告)日：2023-11-23

申请号：US18247951

申请日：2021-10-15

Applicant: Pukyong National University Industry-University Cooperation Foundation

Inventor： Hansang KWON

IPC: B22F7/02 ,  B22F9/04 ,  B22F5/00 ,  B22F3/18 ,  B22F3/105

CPC classification number: B22F7/02 ,  B22F9/04 ,  B22F5/006 ,  B22F3/18 ,  B22F3/105 ,  B22F2998/10 ,  B22F2009/043 ,  B22F2302/403 ,  B22F2301/052 ,  B22F2202/13 ,  B22F2304/10

Abstract: The present invention relates to a method for manufacturing a heterogeneous composite material thin plate and a heterogeneous composite material thin plate manufactured by same, the method comprising the steps of: (a) ball-milling an aluminum or aluminum alloy powder and a carbon nanotube powder so as to prepare a composite powder; (b) preparing a multi-layered billet comprising the composite powder, the multi-layered billet characterized by comprising a core layer and two or more shell layers surrounding the core layer, wherein the core layer is made of the composite powder or an aluminum alloy, the shell layers excluding the outermost shell layer are made of the composite powder, and the outermost shell layer is made of (i) an aluminum or aluminum alloy powder or (ii) the composite powder; and (c) rolling the multi-layered billet so as to form a thin plate shape.

公开(公告)号：US20230326672A1

公开(公告)日：2023-10-12

申请号：US18013537

申请日：2021-08-20

Applicant: KOREA INSTITUTE OF MATERIAL SCIENCE

Inventor： Jung Goo LEE ,  Hee Ryoung CHA ,  Ga Yeong KIM ,  Young Kuk KIM ,  Youn Kyoung BAEK

IPC: H01F41/02 ,  H01F1/055 ,  B22F1/08 ,  B22F9/00 ,  B22F9/04 ,  B22F3/14 ,  B22F3/24 ,  B22F3/18 ,  B22F3/17 ,  B22F3/20

CPC classification number: H01F41/0266 ,  H01F1/0551 ,  B22F1/08 ,  B22F9/008 ,  B22F9/04 ,  B22F3/14 ,  B22F3/24 ,  B22F3/18 ,  B22F3/17 ,  B22F3/20 ,  B22F2301/355 ,  B22F2998/10 ,  B22F2999/00 ,  B22F2009/048 ,  B22F2003/248 ,  B22F2003/185 ,  B22F2003/175 ,  B22F2003/208

Abstract: The present disclosure provides a method for manufacturing a multi-main-phase structure magnet having excellent coercive force and a multi-main-phase structure magnet manufactured therefrom.

公开(公告)号：US11639542B2

公开(公告)日：2023-05-02

申请号：US17263160

申请日：2018-08-30

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Zuming Liu ,  Quan Li ,  Boyun Huang ,  Xueqian Lv ,  Kai Peng ,  Fan Zhao

IPC: B22F1/0545 ,  B22F3/20 ,  B22F9/04 ,  C22C33/02 ,  B22F1/145 ,  C22C32/00 ,  C22C38/28 ,  C22C38/22 ,  B82Y40/00 ,  B22F3/24 ,  B22F3/18

Abstract: A multi-scale and multi-phase dispersion strengthened iron-based alloy, and preparation and characterization methods thereof are provided. The alloy contains a matrix and a strengthening phase. The strengthening phase includes at least two types of the strengthening phase particles with different sizes. A volume of the two types of the strengthening phase particles with different sizes having a particle size less than or equal to 50 nm accounts for 85-95% of a total volume of all the strengthening phase particles. The matrix is a Fe—Cr—W—Ti alloy. The strengthening phases include crystalline Y2O3 phase, Y—Ti—O phase, Y—Cr—O phase, and Y—W—O phase. The characterization method comprises electrolytically separating the strengthening phases in the alloy, and then characterizing by using an electron microscope. The tensile strength of the prepared alloy is more than 1600 MPa at room temperature, and is more than 600 MPa at 700° C.

公开(公告)号：US20220388049A1

公开(公告)日：2022-12-08

申请号：US17777283

申请日：2021-01-15

Applicant: Jiangsu University

Inventor： Hongming WANG ,  Guirong LI

IPC: B21B1/38 ,  C22C1/04 ,  B22F3/105 ,  B22F3/18 ,  B22F9/04 ,  B22F3/14 ,  B22F3/24

Abstract: Disclosed are a rolled (FeCoNiCrRn/Al)-2024Al composite panel and a preparation method therefor. The preparation method involves taking pure aluminum as a matrix, adding an FeCoNiCrRn medium-entropy alloy with a high strength and toughness as an reinforcing phase to prepare an FeCoNiCrRn/Al composite material, then laminating the FeCoNiCrRn/Al composite material with aluminum alloy 2024, and preparing the (FeCoNiCrRn/Al)-2024Al composite board by means of hot-rolling recombination, which solves the problem that high-strength aluminum matrix composites (AMCs) are prone to instantaneous breakability and low ductility, thereby improving the overall performance of the material. The present disclosure adopts microwave sintering (MWS) to fabricate a medium-entropy alloy-reinforced AMC, and adopts hot-roll bonding to fabricate the (FeCoNiCrRn/Al)-2024Al metal composite panel. The composite panel fabricated by the present disclosure has excellent comprehensive mechanical properties, and has high application values for promoting the application of modern lightweight and high-efficiency industrial materials in aerospace, new energy vehicles, and the like.

公开(公告)号：US11148201B2

公开(公告)日：2021-10-19

申请号：US15182042

申请日：2016-06-14

Applicant: Arvind Agarwal ,  Benjamin Boesl ,  Pranjal Nautiyal ,  Chris Rudolf ,  Cheng Zhang

Inventor： Arvind Agarwal ,  Benjamin Boesl ,  Pranjal Nautiyal ,  Chris Rudolf ,  Cheng Zhang

IPC: B22F7/02 ,  B22F3/105 ,  B22F3/18 ,  C23C14/18 ,  C23C14/58 ,  C22C47/06 ,  C22C21/00 ,  C22C47/04 ,  C22C47/02 ,  B22F1/02 ,  B82Y30/00 ,  B82Y40/00

Abstract: Aluminum-boron nitride nanotube composites and methods of making thereof are disclosed herein. In at least one specific embodiment, the method can include: at least partially coating boron nitride nanotubes with aluminum to make an aluminum-boron nitride nanotube layered structure, where the at least partially coating is performed by sputter deposition, and where the boron nitride nanotubes have a length of about 100 μm to about 300 μm; sintering the aluminum-boron nitride nanotube layered structure to make an aluminum-boron nitride nanotube pellet, where the sintering is performed by spark plasma sintering; and rolling the aluminum-boron nitride nanotube pellet to make the aluminum-boron nitride nanotube composite.

公开(公告)号：US11117206B2

公开(公告)日：2021-09-14

申请号：US15814936

申请日：2017-11-16

Applicant: Powdermet, Inc.

Inventor： Mark Grogan ,  Brian Doud ,  Andrew Sherman

IPC: B22F1/02 ,  B22F3/105 ,  B22F3/14 ,  B22F3/15 ,  B22F3/17 ,  B22F3/18 ,  B22F3/20 ,  B22F3/24 ,  B23H1/08 ,  B23H5/04 ,  B23H5/12 ,  B23H7/00 ,  C04B35/56 ,  C04B35/58 ,  C22C29/00 ,  C22C32/00 ,  F16C17/00 ,  F16C19/00 ,  F16C33/00 ,  B23P13/02 ,  F16C33/04

Abstract: A heterogeneous composite consisting of near-nano ceramic clusters dispersed within a ductile matrix. The composite is formed through the high temperature compaction of a starting powder consisting of a core of ceramic nanoparticles held together with metallic binder. This core is clad with a ductile metal such that when the final powder is consolidated, the ductile metal forms a tough, near-zero contiguity matrix. The material is consolidated using any means that will maintain its heterogeneous structure.

公开(公告)号：US10940533B2

公开(公告)日：2021-03-09

申请号：US16166968

申请日：2018-10-22

Applicant: Desktop Metal, Inc.

Inventor： George Hudelson ,  Emanuel M. Sachs ,  Glenn A. Jordan ,  Midnight Zero

IPC: B22F1/00 ,  B22F3/18 ,  B22F3/16 ,  B33Y10/00 ,  B33Y30/00 ,  B22F3/24 ,  H05K3/10 ,  B29C64/236 ,  B29C64/194 ,  B29C64/343 ,  B22F3/00 ,  B29C64/214 ,  B29C64/218 ,  H05K3/12 ,  B22F3/105 ,  B29C64/329 ,  B33Y40/00 ,  B33Y50/02 ,  B29C64/165

Abstract: A system and corresponding method for additive manufacturing of a three-dimensional (3D) object to improve packing density of a powder bed used in the manufacturing process. The system and corresponding method enable higher density packing of the powder. Such higher density packing leads to better mechanical interlocking of particles, leading to lower sintering temperatures and reduced deformation of the 3D object during sintering. An embodiment of the system comprises means for adjusting a volume of a powder metered onto a top surface of the powder bed to produce an adjusted metered volume and means for spreading the adjusted metered volume to produce a smooth volume for forming a smooth layer of the powder with controlled packing density across the top surface of the powder bed. The controlled packing density enables uniform shrinkage, without warping, of the 3D object during sintering to produce higher quality 3D printed objects.

公开(公告)号：US20200368820A1

公开(公告)日：2020-11-26

申请号：US16773779

申请日：2020-01-27

Applicant: Korea Atomic Energy Research Institute

Inventor： Ki Nam KIM ,  Sung Chan PARK ,  Yong Jin JEONG ,  Kyu Hong LEE ,  Sung Hwan KIM ,  Tae Won CHO ,  Jong Man PARK

IPC: B22F3/18 ,  B22F3/02 ,  B22F3/24 ,  C22C43/00 ,  C22B60/02

Abstract: Disclosed are a method of manufacturing a uranium target, the method including (a) a step of preparing a conjugate including a matrix and a uranium target green compact formed in the matrix; and (b) a step of performing thermo-mechanical treatment through additional heat treatment at 530° C. to 600° C. during a hot rolling pass in a process of hot-rolling the conjugate, and a method of extracting radioactive Mo-99 using the uranium target.

公开(公告)号：US10392687B2

公开(公告)日：2019-08-27

申请号：US13634017

申请日：2011-03-11

Applicant: Laurent Prevond ,  Nicolas Collard ,  Renaud Caplain ,  Pierre Francois

Inventor： Laurent Prevond ,  Nicolas Collard ,  Renaud Caplain ,  Pierre Francois

IPC: B22F3/18 ,  B22F7/00 ,  B22F7/04 ,  B32B3/28 ,  B32B3/26 ,  B32B5/18 ,  C22F1/00 ,  C22F1/04 ,  C23C8/80 ,  B32B15/01 ,  B32B15/04 ,  B32B15/20 ,  B21D47/04 ,  B23K31/02 ,  F28F21/08 ,  C22C47/20

Abstract: A method for manufacturing a metal assembly including an aluminum sheet and at least one metal sheet. An aluminum sheet is treated by heating to a temperature of between 80% and 100% of the melting temperature of the material of which it is comprised for a sufficiently long duration to create and stabilize an alpha alumina layer at the surface of the aluminum sheet. The sheet is then cooled. A metal sheet having a ductility less than or equal to the ductility of the aluminum sheet after cooling is provided, which has surface irregularities having a depth greater than or equal to the thickness of the alpha alumina layer. The aluminum sheet and the metal sheet are roll bonded in a rolling mill to produce the metal assembly, wherein the rolling mill includes at least one cylinder, the outer rolling surface of which is provided with raised portions.

公开(公告)号：US10344356B2

公开(公告)日：2019-07-09

申请号：US15322183

申请日：2015-12-29

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Chao Yang ,  Yaguang Yao ,  Limei Kang ,  Lehua Liu ,  Shengguan Qu ,  Weiping Chen ,  Yuanyuan Li

IPC: C22C1/04 ,  C22C14/00 ,  C22C33/02 ,  B22F3/14 ,  B22F3/16 ,  B22F3/17 ,  B22F3/18 ,  B22F3/20 ,  B22F3/24 ,  B22F9/04 ,  B22F3/105

Abstract: The present invention belongs to the technical field of the preparation of alloy materials, and discloses a high strength and toughness alloy material, a method for preparing the alloy material by semi-solid sintering, and application thereof. The preparation method comprises the three steps of mixing powders, preparing alloy powders by high-energy ball milling, and semi-solid sintering of alloy powders, the key point lies in the two-step sintering, wherein the temperature is heated to less than the initial melting temperature of the lowest-temperature melting peak of the alloy powder, under the sintering pressure conditions, and carried out a sintering densification treatment; after pressure release, the temperature is heated to the sintering temperature Ts, and maintained at the same temperature, and a semi-solid processing is carried out, with a sintering temperature Ts: Ts≥the initial melting temperature of the lowest-temperature melting peak of the alloy powder, Ts≤the initial melting temperature of the highest-temperature melting peak of the alloy powder. By using the present method, a variety of high melting point alloy systems comprising such as Ti-based, Ni-based alloy system, and the like are carried out a semi-solid processing, so as to obtain an alloy material with a novel microstructure such as nanocrystalline, ultra-fine crystalline, fine crystalline or bimodal structure, and the like, and having excellent performances, which can be widely used in the fields of aerospace, military, instruments and the like.