Method for production of master alloys for grain refining treatment of
aluminum melts
    2.
    发明授权
    Method for production of master alloys for grain refining treatment of aluminum melts 失效
    用于生产铝合金精炼处理的主合金的方法

    公开(公告)号:US5104616A

    公开(公告)日:1992-04-14

    申请号:US435520

    申请日:1990-01-16

    IPC分类号: C22C1/02 C22C1/03 C22C21/00

    CPC分类号: C22C1/03

    摘要: A method for the production of master alloys intended for grain refining of aluminum melts and being of the type which comprises of aluminum and 1-15 percent by weight titanium, where titanium is present in the form of intermetallic crystals of titanium aluminide in combination with additives of carbon and/or nitrogen. The method is characterized by adding carbon and/or nitrogen to the aluminum melt in an amount corresponding to at least 0.01 percent by weight in the resultant solidified material. The addition of the carbon and/or nitrogen is effected in elemental form or in the form of dissociable carbon and/or nitrogen containing compounds, making said addition before of during an established thermodynamic state of dissolution of existing crystals of titanium aluminide, and bringing the melt into a thermodynamic state where crystals of titanium aluminide present grow in size and thereafter causing the melt to solidify. Also a master alloy produced according to the above method is claimed.

    摘要翻译: PCT No.PCT / SE88 / 00258 Sec。 371日期1990年1月16日 102(e)日期1990年1月16日PCT提交1988年5月19日PCT公布。 出版物WO88 / 09392 日期:1988年12月1日。一种用于生产用于铝熔体晶粒细化的母合金的方法,其为包含铝和1-15重量%钛的类型,其中钛以金属间晶体的形式存在 的钛化铝与碳和/或氮的添加剂组合。 该方法的特征在于在所得固化材料中以相当于至少0.01重量%的量向铝熔体中加入碳和/或氮。 碳和/或氮的添加以元素形式或以可离解的碳和/或含氮化合物的形式进行,使得在现有的钛酸锂晶体的已知热力学状态之前进行所述添加,并使 熔化成热力学状态,其中钛铝化物的晶体的尺寸现在增长,然后使熔体固化。 还要求根据上述方法制造的母合金。