民机起落架用材料的发展与研究现状  

Development and Research Status of Materials Used for Landing Gear of Civil Aircraft

作　　者：孙艳坤[1] 张威 SUN Yankun;ZHANG Wei(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;China Civil Aviation Ground Special Equipment Research Base,Tianjin 300300,China)

机构地区：[1]中国民航大学航空工程学院,天津300300 [2]中国民航地面特种设备研究基地,天津300300

出　　处：《热加工工艺》2018年第20期22-24,29,共4页Hot Working Technology

基　　金：中央高校基本科研业务费项目中国民航大学专项资助(312-2018C006);国家自然科学基金委员会与中国民航局联合资助项目(U1533103)

摘　　要：起落架是保证民机安全飞行的重要部件。起落架的主体零件材料已广泛采用300M超高强度钢整体锻件、钛合金整体锻件制造技术,新材料的发展使得复合材料起落架也成为可能;通过改进起落架制造工艺并加强表面防护和表面强化可进一步实现起落架与飞机机体同寿命的目标,国产300M钢已达到国际先进水平。在未来几年也要充分重视钛合金材料和复合材料及其制造工艺的研究和开发工作。Landing gear is an important part to ensure the safe flight of civil aircraft. 300 M ultra high strength steel integral forging and titanium alloy integral forging technology were widely used in the main parts of landing gear, and the development of new materials has made the composite landing gear become possible. By improving the manufacturing process of landing gear and strengthening the surface protection and surface strengthening, the goal of same service life of landing gear and aircraft body can be furtherly realized. 300 M steel being developed and produced in China can reach the international advanced level. In the next few years, the research and development of titanium alloy materials, composites and the production technology should be paid more attention.

关 键 词：民机起落架 超高强度钢 钛合金 表面防护 表面强化 

分 类 号：TG142.4[一般工业技术—材料科学与工程] TG146.23[金属学及工艺—金属材料]