The new lightweight high-strength cast aluminum alloy material is used by the aviation industry Lanfei in the process of industrialization of the military-civilian fusion project, making full use of military alloy technology, based on China and foreign related high-strength cast aluminum alloy technology, and making full use of the company's aviation military casting Aluminum alloy technology precipitation, through the research of alloy formula, composition and function analysis, ratio adjustment and optimization, as well as the improvement and solidification of production technology, a new type of lightweight and high-strength cast aluminum alloy material was developed. ZL270LF's casting properties and comprehensive mechanical properties are superior to those of domestically-produced cast aluminum alloy materials. The tensile strength is above 450MPa, and it has excellent ductility. At the same time, the comprehensive mechanical properties are better than the cast aluminum alloy materials that have been announced abroad. The material's tensile strength, yield strength, elongation, and hardness are better than domestic cast aluminum alloy materials, and the tensile strength, yield strength, and specific strength are also better than structural steel, gray cast iron, low-grade ductile iron, and 20 # steel. .
Scope of application: It can be widely used in military aviation and other military industries, and it is a rare and lightweight material that is rare in the lightening process of civil industries such as new energy vehicles, high-speed rail, and motor vehicles.