AI-Li合金在飞机结构上应用的潜力是很大的,这类低密度合金不仅本身具有重量轻的特点,而且将有助于保持铝合金作为飞机骨架主要结构材料的统治地位。美国铝业公司的Alithalite合金研究开发计划正在积极地实施中,并反应了Al-Li合金应用的潜力。合金的商品化以及生产技术和物理冶金学方面的基础知识的发展,在今后五年之内,将对航空铝材冶金学近50年所取得的成就提出挑战。 The potential for AI-Li alloys to be used in aircraft structures is enormous. Such low-density alloys not only have their own light-weight properties, but they also help keep the aluminum alloy dominant as the primary structural material for aircraft frames. Alcoa’s Alithalite alloy research and development program is being actively implemented and reflects the potential of Al-Li alloy applications. The commercialization of alloys and the development of basic know-how in production technology and physical metallurgy will challenge the achievements of aeronautical aluminum metallurgy in the recent 50 years in the next five years.