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    Functionally gradient materials and the manufacture thereof
    134.
    发明授权
    Functionally gradient materials and the manufacture thereof 有权
    功能梯度材料及其制造

    公开(公告)号：US06495212B1

    公开(公告)日：2002-12-17

    申请号：US09720612

    申请日：2001-05-09

    Applicant: Manoj Gupta

    Inventor： Manoj Gupta

    IPC: B05D102

    CPC classification number: C22C1/1042 ,  B22F2999/00 ,  B22F9/082 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2207/03 ,  B22F3/115

    Abstract: This invention relates to the synthesis of Al/SiC based functionally gradient materials using a new technique termed here as gradient slurry disintegration and deposition. Gradients of SiC were successfully established using this technique for the starting weight percentages up to 20%. The results were confirmed using microstructural characterization techniques and microhardness measurements. Functionally gradient materials synthesized using this method holds the promise where differential tribological characteristics and the strength/toughness combinations may be required from the opposite surfaces.

    Abstract translation: 本发明涉及使用这里称为梯度浆料分解和沉积的新技术合成Al / SiC基功能梯度材料。 使用该技术成功建立SiC的梯度，起始重量百分比高达20％。 使用显微结构表征技术和显微硬度测量证实结果。 使用该方法合成的功能性梯度材料具有可能需要相对表面的差分摩擦学特性和强度/韧性组合的承诺。

    High-strength, titanium-bearing, powder metallurgy stainless steel article with enhanced machinability
    136.
    发明授权
    High-strength, titanium-bearing, powder metallurgy stainless steel article with enhanced machinability 有权
    高强度，钛合金，粉末冶金不锈钢制品具有增强的机械加工性能

    公开(公告)号：US06238455B1

    公开(公告)日：2001-05-29

    申请号：US09425664

    申请日：1999-10-22

    Applicant: Robert S. Brown ,  Gregory J. Del Corso ,  Theodore Kosa ,  James W. Martin

    Inventor： Robert S. Brown ,  Gregory J. Del Corso ,  Theodore Kosa ,  James W. Martin

    IPC: C22C104

    CPC classification number: C22C38/004 ,  B22F2999/00 ,  C21D8/065 ,  C22C33/0221 ,  C22C33/0285 ,  B22F3/1216 ,  B22F2201/20 ,  B22F9/082 ,  B22F3/15 ,  B22F5/12 ,  B22F2201/11

    Abstract: A powder metallurgy article formed of a sulfur-containing, precipitation-hardenable, stainless steel alloy is described. The article has a unique combination of strength, ductility, processability, and machinability. The powder metallurgy article is formed of a stainless steel alloy having the following composition in weight percent. C 0.03 max. Mn 1.0 max. Si 0.75 max. P 0.040 max. S 0.010-0.050 Cr 10-14 Ni 6-12 Ti 0.4-2.5 Mo 6 max. B 0.010 max. Cu 4 max. Co 9 max. Nb 1 max. Al 1 max. Ta 2.5 max. N 0.03 max. The balance of the alloy is iron and the usual impurities. The powder metallurgy article according to this invention is characterized by a fine dispersions of titanium sulfides that are not greater than about 5 &mgr;m in major dimension. A method of preparing the powder metallurgy article is also described.

    Abstract translation: 描述了由含硫的沉淀可硬化的不锈钢合金形成的粉末冶金制品。 该产品具有强度，延展性，加工性和可加工性的独特组合。 粉末冶金制品由不锈钢合金制成，其重量百分比如下：合金的平衡是铁和通常的杂质。 根据本发明的粉末冶金制品的特征在于在主要尺寸上不大于约5μm的硫化钛的细分散体。 还描述了制备粉末冶金制品的方法。

    Process for producing powdered superalloys
    137.
    发明授权
    Process for producing powdered superalloys 失效
    粉末状超级合金的制造方法

    公开(公告)号：US3872193A

    公开(公告)日：1975-03-18

    申请号：US14614271

    申请日：1971-05-24

    Applicant: GTE SYLVANIA INC

    Inventor： SMITH JAMES THOMAS

    IPC: B01J2/04 ,  B22F9/10

    CPC classification number: B22F9/10 ,  B01J2/04 ,  B22F2999/00 ,  B22F2201/11

    Abstract: A process produces the pre-alloyed superalloy powders having the constituents homogeneously dispersed throughout and of high purity by placing a shaped article of preselected metallic content in an induction furnace, melting the article by induction heating in a relatively short period of time, forming droplets of molten metal, subjecting the molten metal to a centrifugal force by a rotating disk, cooling the droplets into superalloy particles, collecting the metal particles and providing an inert gas having less than 1 ppm of oxygen, water and nitrogen throughout the foregoing steps.

    Abstract translation: 一种方法通过在感应炉中放置预选的金属含量的成形制品，在相对较短的时间内通过感应加热熔化制品，从而产生具有均匀分散的整体和高纯度的预合金化的超合金粉末，形成液滴 熔融金属，通过旋转盘对熔融金属进行离心力，将液滴冷却成超合金颗粒，收集金属颗粒并提供在上述步骤中具有少于1ppm氧，水和氮的惰性气体。

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