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49 条记录 (耗时 0.024 秒)

    Architected materials with controlled permeability and methods for making and using the same
    1.
    发明授权
    Architected materials with controlled permeability and methods for making and using the same 有权

    公开(公告)号：US12103074B1

    公开(公告)日：2024-10-01

    申请号：US17702789

    申请日：2022-03-24

    申请人： HRL Laboratories, LLC

    发明人： John H. Martin ,  Brennan Yahata ,  Darby Laplant ,  Christopher Roper

    IPC分类号： B33Y80/00 ,  B22F10/20 ,  B28B1/00 ,  B29C64/141 ,  B33Y10/00

    CPC分类号： B22F10/20 ,  B28B1/001 ,  B29C64/141 ,  B33Y10/00 ,  B33Y80/00

    摘要： Some variations provide an additively manufactured article comprising a first region and a second region, wherein the first region is a solid region or a porous region, wherein the second region has a pore size larger than the first-region pore size, and wherein the first-region average permeability is lower than the second-region average permeability. Some variations provide a co-sintering method of making an architected material with regions having different permeabilities, in which different additive-manufacturing process parameters are applied to distinct regions of the structure. Other variations provide a wall-pinning method of making an architected material with regions having different permeabilities, in which additive-manufacturing process parameters are selected to sinter pinned feedstock powder between solid walls. Engineered structures with controlled permeability, integrated manifolds, and arbitrary geometries are disclosed, without the requirement of complex manufacturing. Many uses are described for the disclosed additively manufactured articles.

    Methods and systems for inspecting hierarchical powders and verifying the functionalization of powder surfaces
    4.
    发明授权
    Methods and systems for inspecting hierarchical powders and verifying the functionalization of powder surfaces 有权

    公开(公告)号：US11440246B1

    公开(公告)日：2022-09-13

    申请号：US17121627

    申请日：2020-12-14

    申请人： HRL Laboratories, LLC

    发明人： Darby Laplant ,  John H. Martin ,  Jacob Hundley ,  Julie Miller ,  Zak Eckel

    IPC分类号： B29C64/153 ,  B22F10/34 ,  B22F1/17 ,  B22F1/054

    摘要： The present disclosure provides a methodology in which nanoparticle-coated microparticles are rapidly quality-checked for verification of surface functionalization of a commercial quantities of hierarchical powder. Some variations provide a method for inspecting surface-functionalized microparticles, comprising: selecting samples of hierarchical powders comprising microparticles and surface-coated nanoparticles; subjecting the hierarchical powders to a sample particle-size measurement; comparing the sample particle-size measurement to a baseline measurement; and determining the relative concentration of free nanoparticles, based on particle-size distributions. If the sample particle-size measurement is statistically equivalent to the baseline measurement, that is verification of complete surface functionalization. If the sample particle-size measurement is statistically different than the baseline measurement, then the baseline measurement is subtracted from the sample particle-size measurement, to determine the content of free nanoparticles. Optionally, the surface-coated nanoparticles are removed from the sample and additional particle-size distributions measured, to determine the content of original surface-coated nanoparticles, for additional quality control.

    Hydride-coated microparticles and methods for making the same
    5.
    发明授权
    Hydride-coated microparticles and methods for making the same 有权

    公开(公告)号：US11091826B2

    公开(公告)日：2021-08-17

    申请号：US16994595

    申请日：2020-08-16

    申请人： HRL Laboratories, LLC

    发明人： John H. Martin ,  Tobias A. Schaedler ,  Adam F. Gross ,  Alan J. Jacobsen

    IPC分类号： C22C49/00 ,  B22F1/00 ,  B22F1/02 ,  B22F3/10 ,  C22C1/04

    摘要： A metal microparticle coated with metal hydride nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) containing a metal hydride or metal alloy hydride. The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle metal hydrides onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy hydride nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles.

    Aluminum with grain refiners, and methods for making and using the same
    6.
    发明授权
    Aluminum with grain refiners, and methods for making and using the same 有权

    公开(公告)号：US11053571B2

    公开(公告)日：2021-07-06

    申请号：US16223858

    申请日：2018-12-18

    申请人： HRL Laboratories, LLC

    发明人： John H. Martin ,  Brennan Yahata

    IPC分类号： C22C21/10 ,  C22C21/06 ,  B33Y70/00 ,  C22C21/04 ,  C22C1/10 ,  C22C1/04 ,  C22C32/00 ,  B22F10/20 ,  B23K26/342 ,  C22F1/053 ,  B22F1/02 ,  B33Y80/00 ,  B23K103/10

    摘要： We have developed a scalable approach to directly incorporate grain-refining nanoparticles into conventional hot-tear-susceptible pure aluminum or aluminum alloy powders. These aluminum alloy powders may be additively manufactured into high-strength, crack-free aluminum alloys with fine equiaxed microstructures by incorporating nanoparticle nucleants to control solidification during additive manufacturing. Some variations provide an additively manufactured aluminum alloy comprising aluminum and at least one grain-refining element, wherein the additively manufactured aluminum alloy has a microstructure with equiaxed grains. Pure aluminum or aluminum alloys, combined with grain refiners, are useful in many processes beyond additive manufacturing. Some variations provide an aluminum alloy comprising aluminum and grain-refining nanoparticles selected from zirconium, tantalum, niobium, or titanium, wherein the aluminum alloy has a microstructure that is substantially crack-free with equiaxed grains.

    Nanoparticle composite welding filler materials, and methods for producing the same
    7.
    发明授权
    Nanoparticle composite welding filler materials, and methods for producing the same 有权

    公开(公告)号：US10960497B2

    公开(公告)日：2021-03-30

    申请号：US15880452

    申请日：2018-01-25

    申请人： HRL Laboratories, LLC

    发明人： Brennan Yahata ,  Justin Mayer ,  John H. Martin

    IPC分类号： B23K35/02 ,  B22F1/02 ,  B23K35/28 ,  B23K35/32 ,  B23K35/36 ,  B23K35/30

    摘要： A universal approach is described to produce welding filler materials with enhanced grain refining, for making welded objects with hot-crack resistance. Some variations provide a welding filler material comprising a functionalized metal-containing powder, wherein the functionalized metal-containing powder comprises metal or metal alloy particles and a plurality of nanoparticles disposed on surfaces of the metal or metal alloy particles, and wherein the nanoparticles are consolidated in a three-dimensional architecture throughout the welding filler material. A welded object contains a welding filler material comprising the functionalized metal-containing powder, enabling the welded object to be free of hot cracks. Other variations provide methods of making a welding filler material. This approach has been successfully demonstrated by incorporating zirconium-based nanoparticle grain refiners within a welding precursor material for welding aluminum alloy Al 7075, as one non-limiting example.

    Master alloy metal matrix nanocomposites, and methods for producing the same
    9.
    发明授权
    Master alloy metal matrix nanocomposites, and methods for producing the same 有权

    公开(公告)号：US11434546B2

    公开(公告)日：2022-09-06

    申请号：US17089853

    申请日：2020-11-05

    申请人： HRL Laboratories, LLC

    发明人： Brennan D. Yahata ,  John H. Martin

    IPC分类号： B22D23/06 ,  B22F1/00 ,  C22C1/04 ,  C22C1/05 ,  C22C1/10 ,  C22C21/02 ,  C22C32/00 ,  B22F1/07

    摘要： Some variations provide a metal matrix nanocomposite composition comprising metal-containing microparticles and nanoparticles, wherein the nanoparticles are chemically and/or physically disposed on surfaces of the microparticles, and wherein the nanoparticles are consolidated in a three-dimensional architecture throughout the composition. The composition may serve as an ingot for producing a metal matrix nanocomposite. Other variations provide a functionally graded metal matrix nanocomposite comprising a metal-matrix phase and a reinforcement phase containing nanoparticles, wherein the nanocomposite contains a gradient in concentration of the nanoparticles. This nanocomposite may be or be converted into a master alloy. Other variations provide methods of making a metal matrix nanocomposite, methods of making a functionally graded metal matrix nanocomposite, and methods of making a master alloy metal matrix nanocomposite. The metal matrix nanocomposite may have a cast microstructure. The methods disclosed enable various loadings of nanoparticles in metal matrix nanocomposites with a wide variety of compositions.

    Aluminum alloy components from additive manufacturing
    10.
    发明授权
    Aluminum alloy components from additive manufacturing 有权

    公开(公告)号：US11286543B2

    公开(公告)日：2022-03-29

    申请号：US16262886

    申请日：2019-01-30

    申请人： HRL Laboratories, LLC

    发明人： John H. Martin ,  Brennan Yahata

    IPC分类号： C22C21/10 ,  B33Y80/00 ,  C22C21/06 ,  B33Y70/00 ,  C22C32/00 ,  C22C21/04 ,  B23K26/342 ,  C22F1/053 ,  C22C1/04 ,  B23K103/10

    摘要： Some variations provide an additively manufactured aluminum alloy comprising from 84.5 wt % to 92.1 wt % aluminum; from 1.1 wt % to 2.1 wt % copper; from 1.8 wt % to 2.9 wt % magnesium; from 4.5 wt % to 6.1 wt % zinc; and from 0.5 wt % to 2.8 wt % zirconium. The additively manufactured aluminum alloy is in the form of a three-dimensional component. The zirconium functions as a grain-refiner element within the additively manufactured aluminum alloy. The additively manufactured aluminum alloy may be characterized by an average grain size of less than 10 microns. The additively manufactured aluminum alloy may have a substantially crack-free microstructure with equiaxed grains.