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    Stainless steel powder product
    1.
    发明授权
    Stainless steel powder product 失效
    不锈钢粉产品

    公开(公告)号：US3598567A

    公开(公告)日：1971-08-10

    申请号：US3598567D

    申请日：1968-07-01

    申请人： NICHOLAS J GRANT

    发明人： GRANT NICHOLAS J

    IPC分类号： B22F9/00 ,  B22F9/06 ,  C22C33/02

    CPC分类号： C22C33/0221 ,  B22F9/008 ,  B22F9/06 ,  C22C33/0257

    摘要： A METHOD IS PROVIDED FOR PRODUCING HOT WORKABLE METAL POWDER FROM COMPOSITIONS NORMALLY DIFFICULT OR IMPOSSIBLE TO WORK. A MOLTEN METAL BATH IS ESTABLISHED OF A METAL COMPOSITION OF MELTING POINT ABOVE 1000* C. CONTAINING SUBSTANTIAL AMOUNTS OF AT LEAST ONE PHASEFORMING CONSTITUENT WHICH NORMALLY FORMS A SEGRAGATABLE PHASE ON COOLING. THE BATH IS SUBDIVIDED INTO MEDIUM TO SMALL METAL DROPLETS AND IS RAPIDLY COOLED TO A TEMPERATURE BELOW THE FREEZING POINT AT A COOLING RATE OF AT LEAST ABOUT 100* C./SEC., AND PREFERABLY FURTHER RAPIDLY COOLED TO OR NEAR ROOM TEMPERATURE. THE POWDER THUS PRODUCED, BECAUSE OF A FINE DENDRITIC GRAIN SIZE, IS ONLY SLIGHTLY IF AT ALL SEGREGATED AND ALL HARD BRITTLE PHASES ARE DISITRIBUTED AS FINE PARTICLES, MAKING THE ALLOY READILY HOT WORKABLE. EXCESS SOFT PHASES ALSO FOLLOW THE SAME HIGHLY DISPERSED DIESTRIBUTION. THUS, A PRODUCT IS PROVIDED CHARACTERIZED BY A FINE NEAR MICRON DISPERSION OF EXCESS PHASES WHICH NORMALLY SEGREGATE AND FORM AS COARSE PHASES, FOR EXAMPLE AT GRAIN BOUNDARIES, WITH RESULTANT POOR HOT WORKING PROPERTIES.

    Method for improving performance of irradiated structural materials
    2.
    发明授权
    Method for improving performance of irradiated structural materials 失效
    改善辐射结构材料性能的方法

    公开(公告)号：US4885128A

    公开(公告)日：1989-12-05

    申请号：US760632

    申请日：1985-07-30

    申请人： Janez Megusar ,  Otto K. Harling ,  Nicholas J. Grant

    发明人： Janez Megusar ,  Otto K. Harling ,  Nicholas J. Grant

    IPC分类号： G21C13/08

    CPC分类号： G21C13/08 ,  Y02E30/40 ,  Y10S376/90

    摘要： Method for extending service life of nuclear reactor components prepared from ductile, high strength crystalline alloys obtained by devitrification of metallic glasses. Two variations of the method are described: (1) cycling the temperature of the nuclear reactor between the operating temperature which leads to irradiation damage and a lThe U.S. Government has rights in this invention by virtue of Department of Energy, Office of Fusion Energy, Grant No. DE-AC02-78ER-10107.

    摘要翻译： 通过金属玻璃失透获得的延性高强度结晶合金制备的核反应堆组件使用寿命的方法。 描述了该方法的两种变化：（1）在导致照射损伤的工作温度和合金通过非晶化过程再生的较低温度之间循环核反应堆的温度; 和（2）在合金的非晶化温度稍微高于合金的温度下操作反应器，其中结晶状态的合金的照射损伤由于显着的紊乱分辨率而降低。 可以通过选择适当的金属玻璃合金并通过选择减少或逆转照射损伤的方法来为单个反应器优化该方法。 该方法适用于涉及辐照损伤的所有核转化技术。 特别地，它可以用于在融合环境中延长组件的使用寿命，这是实现经济融合能力的关键步骤。

    Process for producing high hafnium carbide containing alloys
    4.
    发明授权
    Process for producing high hafnium carbide containing alloys 失效
    生产高含铪合金的方法

    公开(公告)号：US4481034A

    公开(公告)日：1984-11-06

    申请号：US417671

    申请日：1982-09-13

    申请人： Nicholas J. Grant ,  Ramon K. Robinson

    发明人： Nicholas J. Grant ,  Ramon K. Robinson

    IPC分类号： C22C32/00 ,  C22C19/08

    CPC分类号： C22C32/0052

    摘要： Disclosed is a process for forming a new group of cobalt-based alloys containing 3-18% hafnium carbide (HfC), the HfC having a particle size finer than about three microns. The class of alloys exhibits excellent tensile strength characteristics at very low temperatures, exhibits very good time-temperature stability, and shows excellent oxidation characteristics even at temperatures above about 1000.degree. C. In addition, the alloy is attractive for use in the wrought state because of its ductility and low-temperature toughness characteristics.

    摘要翻译： 公开了一种用于形成新的含有3-18％碳化铪（HfC）的钴基合金的组合的方法，该HfC具有比三微米更细的粒度。 合金种类在非常低的温度下表现出优异的拉伸强度特性，显示出非常好的时间 - 温度稳定性，并且即使在高于约1000℃的温度下也显示出优异的氧化特性。另外，该合金在锻造状态中是有吸引力的，因为 的延展性和低温韧性特性。

    High HfC-containing alloys
    5.
    发明授权
    High HfC-containing alloys 失效
    高含HfC合金

    公开(公告)号：US4084964A

    公开(公告)日：1978-04-18

    申请号：US664208

    申请日：1976-03-05

    申请人： Nicholas J. Grant ,  Ramon K. Robinson

    发明人： Nicholas J. Grant ,  Ramon K. Robinson

    IPC分类号： C22C32/00 ,  C22C19/08

    CPC分类号： C22C32/0052 ,  Y10S75/956

    摘要： A new class of cobalt-based alloys and the like containing hafnium carbide (HfC) of particle size finer than about 3 microns and containing HfC in the range 2 to 15% by volume. The class has good strength characteristics at both very high and very low temperatures, it exhibits very good stability, and it has excellent oxidation characteristics even at temperatures at 2000.degree. F and above. In addition, the alloy has ductility and low-temperature toughness characteristics that make it attractive for wrought processes.

    摘要翻译： 一类新颖的钴基合金等，其含有粒度小于约3微米并含有2至15体积％范围内的HfC的碳化铪（HfC）。 该类在非常高和非常低的温度下具有良好的强度特性，表现出非常好的稳定性，即使在2000°F以上的温度下也具有优异的氧化特性。 此外，合金具有延展性和低温韧性特性，使其对锻造工艺具有吸引力。

    Atomization die and method for atomizing molten material
    8.
    发明授权
    Atomization die and method for atomizing molten material 失效
    雾化模具和雾化熔融材料的方法

    公开(公告)号：US4485834A

    公开(公告)日：1984-12-04

    申请号：US327698

    申请日：1981-12-04

    申请人： Nicholas J. Grant

    发明人： Nicholas J. Grant

    IPC分类号： B22F9/08 ,  C03B19/01 ,  C03B19/10 ,  C03B37/06 ,  C23C4/12 ,  D04H1/56 ,  B22D23/00

    CPC分类号： B22F9/082 ,  C03B19/01 ,  C03B19/10 ,  C03B37/06 ,  C23C4/123 ,  D04H1/56 ,  B22F2009/088 ,  B22F2998/00 ,  B22F2999/00

    摘要： The die comprises at least one set of opposed linearly configurated die elements spaced in substantially parallel relationship to define a longitudinally configurated die space therebetween dimensioned to pass therethrough a sheet of the molten material, the die elements defining a nozzle assembly characterized by oppositely disposed orifice-bearing surfaces. Each of the linear die elements has a gas pressure manifold for receiving atomizing gas under superatmospheric pressure, each of the oppositely disposed nozzle-defining surfaces having at least one array of orifices extending therealong and embracing each side of the longitudinally configurated die space defined by the oppositely disposed linear die elements. Conduits are provided for communicating the orifices with the gas manifold, the array of orifices in each of the die elements being convergently directed towards the other through an included angle of, for example, 40.degree. for directing atomizing gas against a predetermined focal region on a sheet of molten material passing through the longitudinal die space, each of the orifice conduits connected to resonating cavities for generating ultrasonic, high frequency shock waves for one-step disintegration of the sheet of molten material at said focal region into fine atomized particles which later solidify. The uses include the production of dry powders and liquid dynamically densified shapes, such as ingots, forging and rolling preforms and highly dense compacts.

    摘要翻译： 模具包括至少一组相对的线性构造的模具元件，其基本平行的关系间隔开，以限定其间尺寸设计成穿过熔融材料片材的纵向配置的模具空间，模具元件限定喷嘴组件，其特征在于相对设置的孔口 - 轴承表面。 每个线性模具元件具有用于在超大气压力下接收雾化气体的气体压力歧管，每个相对设置的喷嘴限定表面具有至少一个孔阵列，其沿着其延伸并且包围由所述纵向配置的模具空间的每一侧限定 相对设置的线性模具元件。 提供管道用于将孔与气体歧管连通，每个模具元件中的孔的阵列通过例如40°的夹角会聚地指向另一个，用于将雾化气体引导到预定焦点区域上 熔融材料片通过纵向模具空间，每个孔口导管连接到谐振腔，用于产生超声波高频冲击波，用于在所述焦点区域将熔融材料片一步分解成稍微固化的细小雾化颗粒 。 这些用途包括生产干燥粉末和液体动态致密化的形状，例如锭，锻造和轧制预成型件以及高度致密的压坯。

    Method for making polycrystalline flakes of magnetic materials having strong grain orientation
    9.
    发明授权
    Method for making polycrystalline flakes of magnetic materials having strong grain orientation 失效
    制造具有强颗粒取向的磁性材料的多晶薄片的方法

    公开(公告)号：US5049335A

    公开(公告)日：1991-09-17

    申请号：US301868

    申请日：1989-01-25

    申请人： Toshiro Kuji ,  Robert C. O'Handley ,  Nicholas J. Grant

    发明人： Toshiro Kuji ,  Robert C. O'Handley ,  Nicholas J. Grant

    IPC分类号： B02C4/02 ,  B22D11/06 ,  B22F9/00 ,  B22F9/08 ,  C01G49/00 ,  H01F1/053 ,  H01F1/055 ,  H01F1/057 ,  H01F1/11

    CPC分类号： H01F1/11 ,  B22F9/008 ,  H01F1/0551 ,  H01F1/0571

    摘要： A magnetic material melt is solidified by cooling the material from two opposing surfaces while deforming the material by applying compressive pressure to the two opposing surfaces. Twin roller quenching is a preferred method for producing the flakes. The flakes exhibit strong texture normal to their surface, that is, there is a high degree of alignment of the magnetically easy axes of the crystals within the polycrystalline flake. The strong crystal orientation appears to result both from directional solidification in a thermal gradient and uniaxial deformation of the solid phase in the twin rollers. Magnetization studies on individual flakes show intrinsic coercivities of 14 kOe and a nearly 50% higher remanance for field normal to the flake surface than in the flake plane. Splat quenching is another suitable technique for carrying out the invention.

    摘要翻译： 磁性材料熔体通过从两个相对表面冷却材料而固化，同时通过向两个相对的表面施加压缩压力来使材料变形。 双辊淬火是生产薄片的优选方法。 薄片表现出与其表面相似的强烈纹理，即，多晶薄片内的晶体易磁化轴的高度对准。 强烈的晶体取向似乎都是由双辊中固相的热梯度定向凝固和单相变形引起的。 对单个薄片的磁化研究显示出14kOe的内在矫顽力和对鳞片表面法线的残余物比片状平面高近50％。 飞溅淬火是用于实施本发明的另一种合适的技术。