金属增材制造技术在航空发动机领域的应用

从增材制造技术的基本概念出发,研究了适用于金属材料的定向能量沉积(DED)技术和粉末熔覆(PBF)技术的基本原理、技术内涵以及技术发展,重点分析了增材制造技术在开发燃油喷嘴和低压涡轮叶片等商业化零部件的应用,以及对涡轮叶片、整体叶轮和齿轮等航空发动机部件的修复.研究表明,金属增材制造技术广泛适用于钛合金、镍基合金、钛铝合金等金属材料的航空发动机部件,在设计、制造和经济可承受性等方面具有优势. 

Application of metal additive manufacturing in aero-engine

Additive manufacturing (AM), as one of the most competitive manufacture technologies around the world, was investigated for the application of metal parts in aero-engine. The principles, connotations and development of typical AM technologies applied for metal materials' direct energy deposit (DED) and powder bed fusion (PBF), were analyzed in emphasis. Furthermore, the applications of AM in the development of commercialized aero-engine parts, such as fuel nozzle and low pressure turbine blade, and in the repairing of aero-engine parts, such as turbine blade, whole blisk and gear, were summarized. It is indicated that metal AM technology is suitable for aero-engine parts made from metal material, such as titanium alloy, nickel-based alloy, titanium-aluminium (Ti-Al) alloy, etc. AM technology shows the advantages in design, manufacture and affordability, which are important for the future development of aero-engine industry.