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2. 发明授权

US5238646A Method for making a light metal-rare earth metal alloy 失效
标题翻译：轻金属稀土金属合金的制造方法
公开(公告)号：US5238646A
公开(公告)日：1993-08-24
申请号：US653725
申请日：1991-02-11
申请人： Gary P. Tarcy , Thomas M. Gavasto , Rebecca K. Wyss , T. David Burleigh
发明人： Gary P. Tarcy , Thomas M. Gavasto , Rebecca K. Wyss , T. David Burleigh
IPC分类号： C22B5/04 , C22C1/02 , C22C23/00
CPC分类号： C22B5/04 , C22C1/026 , C22C23/00
摘要： A method for making a light metal-rare earth metal alloy comprises adding a pellet to a substantially flux-free bath of molten light metal, said pellet including a mixture of rare earth metal-containing compound and one or more light metal powders. On a preferred basis, such mixtures comprise scandium oxide, up to about 10 wt. % aluminum powder and a substantial majority of magnesium powder, all of which are substantially similar in median particle size. This mixture is preferably compacted under a pressure of about 7 kpsi or more, then added to a bath of molten magnesium or molten aluminum to make magnesium-scandium, magnesium-aluminum-scandium, or aluminum-magnesium-scandium alloys therefrom. There is further disclosed a method for making an alloy containing about 7-12 wt. % lithium, about 2-7 wt. % aluminum, about 0.4-2 wt. % scandium, up to about 2 wt. % zinc and up to about 1 wt. % manganese, the balance magnesium and impurities.
摘要翻译：一种制造轻金属 - 稀土金属合金的方法包括将颗粒加入到熔融轻金属的基本上无助熔剂的浴中，所述颗粒包括含稀土金属的化合物和一种或多种轻金属粉末的混合物。在优选的基础上，这种混合物包含高达约10重量％的氧化钪。％铝粉和绝大部分镁粉，所有这些粉末在中值粒径方面基本相似。该混合物优选在约7kpsi以上的压力下压实，然后加入熔融镁或熔融铝浴中以制备镁 - 钪，镁 - 铝 - 钪或铝 - 镁 - 钪合金。还公开了一种制备含有约7-12wt。％锂，约2-7wt。％铝，约0.4-2重量％％钪，最多约2重量％％锌和至多约1重量％％锰，余量为镁和杂质。

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