增材制造 TiAl 合金的研究进展

One of the most promising high-temperature structural materials in aerospace and civil industries is the lightweight and heat-resistant TiAl alloys. However, owing to their low ductility and fracture toughness, manufacturing TiAl parts is challenging. At present, additive manufacturing process is considered one of the most promising technologies for manufacturing TiAl parts. Based on the principles and characteristics of additive manufacturing technology, this paper summarizes the process-structure-property relation of laser metal deposition (LMD), selective laser melting (SLM), and electron beam melting (EBM) in the preparation of TiAl alloy. Furthermore, this paper discusses the future development trends of additive manufacturing technology.