Cast aluminum alloy for can stock and process for producing the alloy
    22.
    发明授权
    Cast aluminum alloy for can stock and process for producing the alloy 失效
    铸铝合金用于罐坯和生产合金的工艺

    公开(公告)号:US6120621A

    公开(公告)日:2000-09-19

    申请号:US676794

    申请日:1996-07-08

    CPC classification number: C22F1/04 B22D11/06 C22C21/06 C22F1/047

    Abstract: An aluminum alloy strip useful for can stock having a thickness of less than or equal to about 30 mm, and containing large (Mn,Fe)Al.sub.6 intermetallics as principal intermetallic particles in said strip. The intermetallic particles have an average surface size at a surface of the strip and an average bulk size in a bulk of the strip, the average surface size being greater than the average bulk size. The strip article may be produced by supplying a molten aluminum alloy having a composition consisting, in addition to aluminum, essentially by weight of: Si between 0.05 and 0.15%; Fe between 0.3 and 0.6%; Mn between 0.6 and 1.2%; Mg between 1.1 and 1.8%; Cu between 0.2 and 0.6%; and other elements: less than or equal to 0.05% each element with a maximum of 0.2% for the total of other elements; and casting the molten alloy in a continuous caster having opposed moving mold surfaces to an as-cast thickness of less than or equal to 30 mm. The moving mold surfaces have a surface roughness of between 4 and 13 microns, substantially in the form of sharp peaks, and heat flux is extracted from the metal at a rate that results in the production of an interdendritic arm spacing of between 12 and 18 microns at the surface of said strip. The strip may then be processed to final thickness by means of rolling and annealing steps.

    Abstract translation: 一种铝合金带,其可用于厚度小于或等于约30mm的罐坯,并且在所述条中含有大的(Mn,Fe)Al6金属间化合物作为主要的金属间化合物颗粒。 金属间化合物颗粒在带的表面具有平均表面尺寸,并且在带的主体中的平均体积尺寸,平均表面尺寸大于平均体积尺寸。 带材制品可以通过提供一种熔融铝合金来制造,该熔融铝合金除了铝之外基本上由以下组成:Si在0.05和0.15%之间; Fe在0.3〜0.6%之间; Mn在0.6〜1.2%之间; 镁含量在1.1〜1.8%之间; Cu在0.2和0.6%之间; 和其他元素:每个元素小于或等于0.05%,其他元素的总数最多为0.2%; 并将具有相对的移动模具表面的连续铸造机中的熔融合金铸造成铸造厚度小于或等于30mm。 移动的模具表面的表面粗糙度在4和13微米之间,基本上是尖锐的形式,并且热量从金属中提取出来,其速率使树枝状间距的间隔在12和18微米之间 在所述条的表面。 然后可以通过轧制和退火步骤将带材加工成最终厚度。

    Cast metal-matrix composite material and its use
    23.
    发明授权
    Cast metal-matrix composite material and its use 失效
    铸造金属基复合材料及其用途

    公开(公告)号:US6086688A

    公开(公告)日:2000-07-11

    申请号:US901800

    申请日:1997-07-28

    Abstract: A metal-matrix composite material includes a matrix having magnesium in an amount of more than about 0.3 weight percent but no more than about 2.5 weight percent, an alloying element of about 0.8 to about 2.5 weight percent iron or from about 1.0 to about 2.5 weight percent manganese, and the balance aluminum and impurities. Dispersed throughout the matrix is a plurality of metal oxide particles present in an amount of more than about 5 volume percent but no more than about 25 volume percent of the total volume of the matrix and the particles. This material may be cast into casting molds. After casting is complete and during solidification of the matrix alloy, a high volume fraction of intermetallic particles is crystallized in the matrix alloy. The total of the volume fractions of the metal oxide particles and the intermetallic particles is from about 10 to about 40 volume percent, preferably from about 25 to about 40 volume percent.

    Abstract translation: 金属基质复合材料包括具有大于约0.3重量%但不超过约2.5重量%的镁的基体,约0.8至约2.5重量%的铁或约1.0至约2.5重量%的合金元素 百分数锰,余量为铝和杂质。 在整个基质中分散的是多个金属氧化物颗粒,其量以基体和颗粒总体积的大于约5体积%但不超过约25体积%。 这种材料可以铸造成铸模。 铸造完成后,在基质合金固化过程中,基体合金中大量的金属间化合物颗粒结晶。 金属氧化物颗粒和金属间化合物颗粒的体积分数的总和为约10至约40体积%,优选约25至约40体积%。

    Lightweight metal with isolated pores and its production
    24.
    发明授权
    Lightweight metal with isolated pores and its production 失效
    轻质金属与孤立的毛孔及其生产

    公开(公告)号:US5221324A

    公开(公告)日:1993-06-22

    申请号:US908581

    申请日:1992-06-29

    Abstract: A novel lightweight gas metal composite is produced having isolated particle stabilized pores. A composite of a metal matrix, e.g. aluminum, and finely divided solid stabilizer particles, e.g. silicon carbide, is heated above the liquidus temperature of the metal matrix and this is mixed such that a vortex is formed. The molten composite is blanketed with a gas and during the vortex mixing. This gas is drawn into the melt to produce an expanded, viscous molten composite material containing pores which are very small, spherical-shaped and quite evenly distributed. The viscous molten composite material can be directly formed into a solid shaped product and is also capable of being remelted and formed by forming processes without destroying the integrity of the pores. The result is a lightweight expanded metal product capable of being formed into shapes to close dimensional tolerances.

    Abstract translation: 生产出具有隔离的颗粒稳定孔的新型轻质气体金属复合材料。 金属基质的复合物,例如 铝和细碎的固体稳定剂颗粒,例如。 碳化硅被加热到高于金属基体的液相线温度,并且将其混合以形成涡流。 熔融的复合材料用气体和涡流混合期间覆盖。 该气体被吸入熔体中以产生膨胀的,粘稠的熔融复合材料,该材料含有非常小的球形并且分布相当均匀的孔。 粘稠的熔融复合材料可以直接形成为固体成型产品,并且还能够通过成型工艺重熔和形成,而不破坏孔的完整性。 其结果是能够形成为缩小尺寸公差的轻质金属制品。

    Melt process for the production of metal-matrix composite materials with
enhanced particle/matrix wetting
    25.
    发明授权
    Melt process for the production of metal-matrix composite materials with enhanced particle/matrix wetting 失效
    用于生产具有增强的颗粒/基质润湿性的金属基复合材料的熔融过程

    公开(公告)号:US5028392A

    公开(公告)日:1991-07-02

    申请号:US538225

    申请日:1990-06-14

    CPC classification number: B22D1/00 C22C1/1036 C22C32/0036 Y10T428/12486

    Abstract: A metal matrix composite material containing discontinuous particles in a metallic matrix is prepared by forming a mixture of the molten alloy and the particles in a closed reactor, removing oxygen from the interior of the reactor, statically pressurizing the interior of the reactor with nitrogen gas, mixing the mixture of the molten alloy and particles in the presence of the static nitrogen gas to wet the molten matrix to the particles, and evacuating the interior of the reactor in a stepwise manner. The nitrogen gas aids in wetting the metallic alloy to the particles by forming aluminum nitride at the particle-molten matrix interface, so that a lower contact angle of the alloy to the particle results. Oxygen that may be present in the sealed reactor is gettered by the aluminum, and the nitrogen is removed by stepwise evacuation, thereby minimizing the introduction of gas into, and retention of gas within, the melt.

    Abstract translation: 通过在密闭反应器中形成熔融合金和颗粒的混合物来制备金属基体中含有不连续颗粒的金属基质复合材料,从反应器内部除去氧气,用氮气静置加压反应器内部, 在静态氮气存在下将熔融合金和颗粒的混合物混合,将熔融基体润湿颗粒,并逐步排空反应器内部。 氮气有助于通过在颗粒 - 熔融基质界面处形成氮化铝将金属合金润湿到颗粒中,从而导致合金与颗粒的较低接触角。 可能存在于密封反应器中的氧气被铝吸收,并且通过逐步排空除去氮气,从而最小化气体进入和保持熔体内的气体。

    Method of producing lightweight foamed metal
    26.
    发明授权
    Method of producing lightweight foamed metal 失效
    生产轻质泡沫金属的方法

    公开(公告)号:US4973358A

    公开(公告)日:1990-11-27

    申请号:US403588

    申请日:1989-09-06

    CPC classification number: C22C1/08 B22D25/005 C22C2001/083

    Abstract: A method is described for producing foamed metal in which gaseous bubbles are retained within a mass of molten metal during foaming. The method comprises heating a composite of a metal matrix and finely divided solid stabilizer particles above the liquidus temperature of the metal matrix, discharging gas bubbles into the molten metal composite below the surface thereof to thereby form a foamed melt on the surface of the molten metal composite and cooling the foamed melt thus formed below the solidus temperature of the melt to form a solid foamed metal having a plurality of closed cells.

    Abstract translation: 描述了一种用于生产发泡金属的方法,其中气泡在发泡期间保持在熔融金属块内。 该方法包括将金属基体和细分固体稳定剂颗粒的复合物加热到金属基体的液相线温度以上,将气泡排放到其表面下方的熔融金属复合物中,从而在熔融金属表面上形成泡沫熔体 将由此形成的泡沫熔体复合并冷却至低于熔体的固相线温度以形成具有多个闭孔的固体发泡金属。

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