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    Binary or higher order high-density thermodynamically stable nanostructured copper-based tantalum metallic systems, and methods of making the same
    1.
    发明授权
    Binary or higher order high-density thermodynamically stable nanostructured copper-based tantalum metallic systems, and methods of making the same 有权
    二元或更高阶高密度热力学稳定的纳米结构铜基钽金属体系及其制备方法

    公开(公告)号：US09333558B2

    公开(公告)日：2016-05-10

    申请号：US13779803

    申请日：2013-02-28

    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

    Inventor： Kristopher A. Darling ,  Laszlo J. Kecskes ,  Brady G. Butler

    IPC: B22F9/04 ,  C22C9/00 ,  F42B1/032 ,  B02C17/20 ,  B02C17/18 ,  B02C23/06

    CPC classification number: B22F9/04 ,  B02C17/1815 ,  B02C17/20 ,  B02C23/00 ,  B02C23/06 ,  B22F1/0018 ,  B22F2009/043 ,  B22F2009/049 ,  B22F2999/00 ,  C22C1/0425 ,  C22C9/00 ,  F42B1/032 ,  B22F2202/03

    Abstract: A binary or higher order high-density thermodynamically stable nanostructured copper-tantalum based metallic system according to embodiments of the invention may be formed of: a solvent of copper (Cu) metal that comprises 70 to 100 atomic percent (at. %) of the metallic system; and a solute of tantalum (Ta) metal dispersed in the solvent metal, that comprises 0.01 to 15 at. % of the metallic system. The metallic system is thermally stable, with the absence of substantial gross grain growth, such that the internal grain size of the solvent metal is substantially suppressed to no more than about 250 nm at approximately 98% of the melting point temperature of the solvent metal and the solute metal remains substantially uniformly dispersed in the solvent metal at that temperature. Processes for forming these metallic systems may include: subjecting powder metals of solvent and the solute to a high-energy milling process using a high-energy milling device to impart high impact energies to its contents. Due to their high-density thermodynamically stable nanostructured, these metallic systems are an ideal candidate for fabricating shaped charge liners for ordinance.

    Abstract translation: 根据本发明的实施方案的二元或更高阶高密度热力学稳定的纳米结构铜 - 钽基金属体系可以由以下物质形成：铜（Cu）金属的溶剂，其包含70至100原子％（原子百分比） 金属系统 以及分散在溶剂金属中的钽（Ta）金属溶质，其含有0.01〜15at。 ％的金属系统。 金属体系是热稳定的，不存在实质的总晶粒生长，使得溶剂金属的内部晶粒尺寸在溶剂金属的熔点温度的约98％时基本上被抑制到不超过约250nm，并且 在该温度下，溶质金属基本均匀地分散在溶剂金属中。 用于形成这些金属体系的方法可以包括：使用高能研磨装置对溶剂的粉末金属和溶质进行高能量研磨工艺，以赋予其内容物高的冲击能。 由于它们的高密度热力学稳定的纳米结构，这些金属系统是制造用于法规的成形充电衬垫的理想候选者。

    Method for preparing pre-coated, ultra-fine, submicron grain titanium and titanium-alloy components and components prepared thereby
    7.
    发明申请
    Method for preparing pre-coated, ultra-fine, submicron grain titanium and titanium-alloy components and components prepared thereby 有权
    用于制备由此制备的预涂，超细，亚微米级钛和钛合金组分和组分的方法

    公开(公告)号：US20060099432A1

    公开(公告)日：2006-05-11

    申请号：US10982338

    申请日：2004-11-05

    Applicant: Steven Keener

    Inventor： Steven Keener

    IPC: B32B15/08 ,  B22F3/02

    CPC classification number: C22C14/00 ,  B22F1/0018 ,  B22F1/0044 ,  B22F3/24 ,  B22F9/04 ,  B22F2003/242 ,  B22F2009/041 ,  B22F2009/049 ,  B22F2202/03 ,  B22F2999/00 ,  C22C1/0458 ,  Y10T428/24008 ,  Y10T428/31678 ,  Y10T428/31688

    Abstract: The invention is a high-strength, pre-coated, titanium or titanium-alloy material component comprising a titanium or titanium-alloy material article having ultra-fine, submicron grain size microstructure and an organic coating of phenolic resin applied to the surface of the article. The article is prepared from a coarse grain titanium or titanium-alloy powder material that is cryomilled into an ultra-fine, submicron grain material, degassed, and densified. The densified material is formed or otherwise processed into a article, and pre-coated with an organic coating containing phenolic resin prior to installation or assembly.

    Abstract translation: 本发明是一种高强度，预涂层的钛或钛合金材料成分，它包括钛或钛合金材料制品，其具有超微细亚微米晶粒尺寸的微结构，以及施加到表面的酚醛树脂的有机涂层 文章。 该制品由粗晶钛或钛合金粉末材料制成，该材料被冷冻成超微细亚微米颗粒材料，脱气并致密化。 将致密材料形成或以其它方式加工成制品，并在安装或组装之前用含有酚醛树脂的有机涂层预涂覆。

    NANOPHASE COMPOSITE DUCT ASSEMBLY
    8.
    发明申请
    NANOPHASE COMPOSITE DUCT ASSEMBLY 有权
    NANOPHASE复合导管总成

    公开(公告)号：US20040255460A1

    公开(公告)日：2004-12-23

    申请号：US10352307

    申请日：2003-01-27

    Inventor： Clifford C. Bampton ,  Thomas J. Van Daam ,  Daniel E. Matejczyk

    IPC: B21C023/00 ,  C22F001/04 ,  B21D039/00

    CPC classification number: B22F3/162 ,  B21C23/002 ,  B21C23/01 ,  B21C23/085 ,  B22F1/0044 ,  B22F3/20 ,  B22F2009/049 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  B23K20/12 ,  C22C2204/00 ,  C22F1/04 ,  F02C7/222 ,  F02K9/44 ,  Y10T29/4933 ,  Y10T29/49346 ,  Y10T29/49913 ,  B22F5/106 ,  B22F7/08 ,  C22C1/1036 ,  B22F9/04 ,  B22F3/15 ,  B22F2202/03

    Abstract: A nanophase composite duct assembly and method of fabricating the same are provided that comprise an ultra-high strength nanophase aluminum alloy duct joined with a ceramic particulate reinforced metal matrix fitting, preferably using solid-state friction welding. The nanophase aluminum alloy duct is fabricated by extruding a billet formed by a process of cryogenic milling the alloy, followed by out-gassing, then hot isostatic pressing. The fitting is fabricated by combining a ceramic particulate with a metal matrix, preferably by powder processing or liquid metal infiltration. Further, the solid-state friction welding may comprise inertial welding, friction stir welding, or a combination thereof. As a result, a lightweight duct assembly is provided for high-pressure liquids such as propellants in rocket engines.

    Abstract translation: 提供了一种纳米相复合管道组件及其制造方法，其包括与陶瓷颗粒增强金属基体接头连接的超高强度纳米相铝合金管道，优选使用固态摩擦焊接。 纳米相铝合金管道是通过挤出通过低温研磨合金的方法形成的坯料，然后排气，然后进行热等静压制成的。 通过将陶瓷颗粒与金属基体结合，优选通过粉末加工或液态金属渗透来制造该配件。 此外，固态摩擦焊接可以包括惯性焊接，摩擦搅拌焊接或其组合。 结果，为火箭发动机中的诸如推进剂的高压液体提供轻质的管道组件。

    Method for improving the sinterability of iron powder derived from comminuted scrap metal
    9.
    发明授权
    Method for improving the sinterability of iron powder derived from comminuted scrap metal 失效
    提高粉碎废金属铁粉的烧结性的方法

    公开(公告)号：US4129443A

    公开(公告)日：1978-12-12

    申请号：US735468

    申请日：1976-10-26

    Applicant: Sydney M. Kaufman

    Inventor： Sydney M. Kaufman

    IPC: B22F1/00 ,  B22F1/02 ,  B22F3/10 ,  B22F8/00 ,  B22F9/04 ,  C22C33/02 ,  B02C11/08

    CPC classification number: B22F8/00 ,  B22F1/025 ,  B22F9/04 ,  B22F2009/046 ,  B22F2009/049 ,  B22F2998/10 ,  B22F2999/00 ,  Y02P10/24 ,  Y02W30/541 ,  Y10S241/37

    Abstract: Methods are disclosed for embrittling scrap metal for comminution and for subsequent or simultaneous treatment of the comminuted metal powder to improve sintering kinetics and prevent oxidation of alloying ingredients. A first embrittling method impacts the scrap metal at a temperature below its ductile-brittle transition temperature to cryogenically provide scrap metal powder. The scrap metal is subjected to two impacting operations (such as by use of a ball milling machine), the first operation being carried out simultaneously with the cryogenic medium and the second impacting operation is carried out at ambient temperature conditions utilizing milling elements which impart cold work to at least a portion of the cryogenic powder. An anti-oxidation agent, such as copper or iron, is mechanically transferred to substantially each particle of said cryogenic powder during the second operation to form a continuous copper or iron envelope thereabout. The coated cryogenic powder is then compacted and sintered; the sintered product may be subjected to hardening or tempering treatments if desired. Also disclosed is a continuous method for carrying out both cryogenic embrittlement impaction, and coating. A mass of liquid N.sub.2 and metal pieces are circulated in a properly oriented tube so that in one zone a true slurry exists with liquid N.sub.2 in intimate contact with the metal pieces; in another zone the metal pieces are withdrawn from the slurry to momentarily increase in temperature. Fragmenting occurs substantially in said one zone and cold-working substantially in said another zone, while progressive anti-oxidation coating of the comminuted particles occurs in both zones.A second embrittling method involves dissolving the carbon in ferrous scrap metal having a critical predetermined carbon content, quenching the metal to produce substantially all martensite, and impacting the treated metal while simultaneously coating with an anti-oxidizing agent.

    Abstract translation: 公开了用于脆化废金属粉碎和随后或同时处理粉碎的金属粉末以提高烧结动力学和防止合金成分氧化的方法。 第一种脆化方法在低于其延性 - 脆性转变温度的温度下对废金属产生影响，以低温提供废金属粉末。 废金属经受两次冲击操作（例如通过使用球磨机），与低温介质同时进行的第一操作和第二冲击操作在环境温度条件下进行，使用赋予冷的铣削元件 对至少一部分低温粉末起作用。 在第二次操作期间，将抗氧化剂（例如铜或铁）机械转移到基本上所述低温粉末的每个颗粒，以在其周围形成连续的铜或铁包层。 然后将涂覆的低温粉末压实并烧结; 如果需要，可以对烧结产品进行硬化或回火处理。 还公开了用于进行低温脆化冲击和涂覆的连续方法。 液体N 2和金属块的质量在适当取向的管中循环，使得在一个区域中存在真正的浆料，液体N 2与金属片紧密接触; 在另一个区域中，金属片从浆液中取出以使温度瞬间升高。 在所述一个区域中基本上发生碎裂，并且基本上在所述另一个区域中进行冷加工，而粉碎颗粒的进行性抗氧化涂层出现在两个区域中。

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