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现代技术要求轻而高强度的结构材料,因此,对提高比重小的(1.8～1.9克/厘米~3)镁合金的机械性能的研究具有很大的现实性。众所周知,向镁合金中加入稀有和稀土金属可以提高镁合金在室温和高温下的性能。研制了用铈、钕、锆、镧和钍合金化的变形镁合金,并得到了应用。近年来的文献提出用难熔金属钇和钪做为镁合金的合金化元素。这些元素按其物理——化学性质接近稀土金属。因为这些金属的比重不太大(钇
Modern technology requires lightweight and high-strength structural materials. Therefore, it is very realistic to study the mechanical properties of magnesium alloys with small specific gravity (1.8-1.9 g / cm3). It is well known that the addition of rare earths and rare earth metals to magnesium alloys can improve the performance of magnesium alloys at room and elevated temperatures. A modified magnesium alloy alloyed with cerium, neodymium, zirconium, lanthanum and thorium was developed and applied. In recent years, the literature proposed the use of refractory metal yttrium and scandium magnesium alloy as an alloying element. These elements are close to rare earth metals by their physical-chemical properties. Because of the proportion of these metals is not too large (yttrium