新一代的飞机和宇航飞行器需要新型的结构材料,要求它们的物理和机械性能比现有高性能合金的还要好一些。工业部门和国防部门都支持发展提高室温和高温强度,降低比重,增加刚性,提高热稳定性,以及改善耐蚀性和耐氧化性的新型金属材料的研究。就新型轻合金材料来说,人们对铝、钛、镁合金材料给予了极大的注意;而对于 The new generation of aircraft and spacecraft require new types of structural materials that require their physical and mechanical properties to be better than existing high-performance alloys. Both the industrial and defense sectors support the development of new metallic materials that improve room and high temperature strength, reduce specific gravity, increase rigidity, increase thermal stability, and improve corrosion and oxidation resistance. For the new light alloy materials, people pay great attention to aluminum, titanium and magnesium alloy materials;