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铍在液体镁中的溶解度很小,所以用一般铸造方法制取镁铍合金会有较大的困难。在该合金中,铍的浓度一般不超过0.1％(重量％,以下略)。同时,合金的持久耐热性主要取决于铍的浓度。粉末冶金法是生产镁合金的高铍含量最有前途的方法之一。这些合金可用作反应堆结构材料,其中用可于制造ТВЗЛ的壳体。烧结合金的性能在很大程度上取决于原粉末的制造方法、粉末的粒度和组成元素的分布情况。由具有离分散度的镁和铍的粉末制成的混合物,经适当选择可使合金的
Beryllium solubility in liquid magnesium is very small, so the general method of casting magnesium beryllium alloy will have greater difficulty. In this alloy, the beryllium concentration is generally not more than 0.1% by weight (hereinafter, abbreviated). At the same time, the long-term heat resistance of the alloy depends mainly on the concentration of beryllium. Powder metallurgy is one of the most promising ways to produce high beryllium content in magnesium alloys. These alloys can be used as structural materials for reactors, of which the shell can be made from ТВЗЛ. Sintered alloy performance depends largely on the original powder manufacturing methods, particle size and composition of the powder distribution. A mixture made of a powder of magnesium and beryllium with a degree of dispersion can be made, as appropriate,