铝锂合金薄板在国内航空领域的工程化应用与展望-中国材料进展

文章信息/Info

Title:: Engineering Application and Prospect of Aluminum-Lithium Alloy Sheet in Domestic Aviation Field

Author(s):: ZHENG Hao; YANG Jian; KOU Feixing; The First Aircraft Institute, Aviation Industry Corporation of China, Xi’an 710089, China

Keywords:: Al-Li alloy; aviation; sheet; application; manufacturing technology

摘要:: 铝锂合金具有高的比强度、比刚度，及优良的耐损伤特性，在航空航天领域具有取代2×××和7×××铝合金的应用潜力，在飞机设计中获得高减重效益，因而在飞机选材中备受瞩目。介绍了国内制造的飞机及零部件所应用的各类铝锂合金薄板的研制历程、主要特点及应用部位，描述了铝锂合金薄板在国内主机厂的应用现状及当前应用存在的问题，尤其是制造工艺中的困难。从飞机选材角度出发，列举了国内外铝锂合金先进制造工艺的应用，展望了未来国内铝锂合金的研发思路及急需攻关的问题，为今后铝锂合金在我国航空领域的应用研发提供参考。

Abstract:: Aluminum-lithium alloy has high specific strength, high specific stiffness and excellent damage-tolerance. It has the potential to replace 2××× and 7××× aluminum alloys in the aerospace field, and provides high weight loss benefits in the aircraft design. Aluminum-lithium alloy has attracted much attention in the aircraft material selection. In this paper, we introduce the development history, main characteristics and application parts of various aluminum-lithium alloy sheets for aircraft and parts manufacturing in China, and illustrate the application status of aluminum-lithium alloy sheet in domestic mainframe factory, including the existing problems in the current application, especially the difficulties in the manufacturing process. The advanced manufacturing technology of aluminum-lithium alloy parts at home and abroad is listed from the angle of aircraft material selection. Finally, the future research and development of aluminum-lithium alloy in China are prospected. It provides a reference for the application research of aluminum-lithium alloy for aviation field in the future.