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    Production of low temperature aluminum based brazing alloys
    4.
    发明授权
    Production of low temperature aluminum based brazing alloys 失效
    生产低温铝基钎焊合金

    公开(公告)号：US4838341A

    公开(公告)日：1989-06-13

    申请号：US169123

    申请日：1988-03-09

    申请人： Richard L. Bye, Jr. ,  Debasis Bose ,  Santosh K. Das ,  Amitava Datta ,  Colin M. Adam

    发明人： Richard L. Bye, Jr. ,  Debasis Bose ,  Santosh K. Das ,  Amitava Datta ,  Colin M. Adam

    IPC分类号： B22D11/06 ,  B23K35/28

    CPC分类号： B23K35/286 ,  B22D11/0697

    摘要： Apparatus is provided for fabricating continuous metal strip composed of a low density, readily oxidizable aluminum based alloy. The alloy is cast directly from the metal through a slotted nozzle onto a moving chill substrate. A scraping mechanism located upstream of the nozzle is adapted to ride on the substrate and remove therefrom the gaseous boundary layer associated therewith. Disposed between the scraping mechanism and the nozzle is a gas supply mechanism adapted to introduce a replacement gas that is carried by the substrate to the nozzle. A shielding means configured to form a semi-enclosed chamber around the nozzle and the substrate apparatus to direct and confine the replacement gas in the vicinity of the nozzle. The alloy preferably has the form of a foil and a composition consisting essentially of about 10 to 13 weight percent silicon, 0 to 3 weight percent magnesium, 0 to 4 weight percent copper, 0 to 0.2 weight percent of at least one of bismuth, phosphorous, strontium, lithium, scandium, yttrium, sodium and calcium and 0 to 2 weight percent of at least one of the rare earth elements, the balance being aluminum and incidental impurities.

    摘要翻译： 提供了用于制造由低密度，容易氧化的铝基合金组成的连续金属条的装置。 合金通过开槽喷嘴直接从金属铸造到移动的冷却基板上。 位于喷嘴上游的刮削机构适于骑在基板上并从中移除与其相关联的气体边界层。 设置在刮板机构和喷嘴之间的气体供给机构适于将由基板承载的替换气体引入喷嘴。 一种屏蔽装置，被配置为围绕喷嘴和基板装置形成半封闭室，以引导并限制在喷嘴附近的置换气体。 合金优选具有箔的形式和基本上由约10至13重量％的硅，0至3重量％的镁，0至4重量百分比的铜，0至0.2重量百分比的铋，磷中的至少一种组成的组合物 ，锶，锂，钪，钇，钠和钙以及0至2重量％的至少一种稀土元素，余量为铝和杂质。

    Rapidly solidified aluminum-germanium base brazing alloys
    6.
    发明授权
    Rapidly solidified aluminum-germanium base brazing alloys 失效
    快速凝固的铝锗基钎焊合金

    公开(公告)号：US5286314A

    公开(公告)日：1994-02-15

    申请号：US917650

    申请日：1992-07-23

    申请人： Santosh K. Das ,  Chin-Fong Chang

    发明人： Santosh K. Das ,  Chin-Fong Chang

    IPC分类号： B23K35/28 ,  C21D1/00

    CPC分类号： B23K35/28 ,  B23K35/286

    摘要： A low melting (liquidus temperature

    摘要翻译： 低熔点（液相线温度<570℃）快速固化的钎焊合金基本上由约14至52重量％的锗组成，0至10重量％的至少一种选自硅，镁，铋，锶的元素 ，锂，铜，钙，锌和锡，余量为铝和杂质。 该合金具有箔的形式，可用于将不可热处理的快速凝固的Al-Fe-Si-V合金箔，板和管道钎焊到除冰管，包层，散热器，换热器，蒸发器 ，用于高温应用的蜂窝板。

    Rapidly solidified magnesium base alloy sheet
    7.
    发明授权
    Rapidly solidified magnesium base alloy sheet 失效
    快速凝固的镁基合金板

    公开(公告)号：US5078807A

    公开(公告)日：1992-01-07

    申请号：US586179

    申请日：1990-09-21

    申请人： Chin-Fong Chang ,  Santosh K. Das

    发明人： Chin-Fong Chang ,  Santosh K. Das

    IPC分类号： B22F3/18 ,  C22C1/04 ,  C22C23/02 ,  C22F1/06

    CPC分类号： C22C1/0408 ,  C22F1/06

    摘要： Magnesium base metal alloy sheet is produced by rolling the rolling stock extruded or forged from a billet at a temperature ranging from 200.degree. C. to 300.degree. C. The billet is consolidated from rapidly solidified magnesium based alloy powder that consists of the formula Mg.sub.bal Al.sub.a Zn.sub.b X.sub.c, wherein X is at least one element selected from the group consisting of manganese, cerium, neodymium, praseodymium, and yttrium, "a" ranges from about 0 to 15 atom percent, "b" ranges from about 0 to 4 atom percent, "c" ranges from about 0.2 to 3 atom percent, the balance being magnesium and incidental impurities, with the proviso that the sum of aluminum and zinc present ranges from about 2 to 15 atom percent. The alloy has a uniform microstructure comprised of fine grain size ranging from 0.2-1.0 .mu.m together with precipitates of magnesium and aluminum containing intermetallic phases of a size less than 0.1 .mu.m. The sheets have a good combination of mechanical strength and ductility and are suitable for military, space, aerospace and automotive application.

    摘要翻译： 镁贱金属合金板是通过在200℃〜300℃的温度范围内轧制从坯料中挤出或锻造的轧制坯料来制造的。坯料由快速固化的镁基合金粉末固结，该粉末由式MgbalAlaZnbXc， 其中X是选自锰，铈，钕，镨和钇中的至少一种元素，“a”为约0至15原子百分比，“b”为约0至4原子百分数，“c “范围为约0.2至3原子％，余量为镁和附带杂质，条件是存在的铝和锌的总和范围为约2至15原子％。 该合金具有由0.2-1.0μm的细晶粒尺寸以及尺寸小于0.1μm的含有金属间化合物的镁和铝的析出物组成的均匀微观结构。 这些板材具有机械强度和延展性的良好组合，适用于军事，太空，航空航天和汽车应用。

    Rapidly solidified high strength, corrosion resistant magnesium base metal alloys
    9.
    发明授权
    Rapidly solidified high strength, corrosion resistant magnesium base metal alloys 失效
    快速凝固的高强度，耐腐蚀的镁基金属合金

    公开(公告)号：US4853035A

    公开(公告)日：1989-08-01

    申请号：US40397

    申请日：1987-04-16

    申请人： Santosh K. Das ,  Chin-Fong Chang

    发明人： Santosh K. Das ,  Chin-Fong Chang

    IPC分类号： B22F9/00 ,  C22C1/04 ,  C22C45/00

    CPC分类号： C22C45/005 ,  B22F9/008 ,  C22C1/0408

    摘要： A metal article is consolidated from a rapidly solidified magnesium based alloy. After consolidation, the alloy has a microstructure containing precipitates of intermetallic phase of average size less than 0.1 .mu.m. The article has a thickness of at least 1 mm measured in the shortest dimension, and exhibits a superior combination of strength, ductility and corrosion resistance.

    摘要翻译： 金属制品由快速固化的镁基合金固结。 固结后，合金具有平均尺寸小于0.1μm的金属间化合物析出物的微结构。 该制品具有至少1mm的最小尺寸测量厚度，并且具有优异的强度，延展性和耐腐蚀性的组合。