TiAl alloy has a combination of advantages

including low density

high specific strength

excellent oxidation resistance and high-temperature creep resistance

which has broad application prospects in aerospace and other fields. However

TiAl alloy

with the poor room temperature ductility

is difficult to fabricate

and the traditional technology preparing TiAl alloy has low efficiency and high cost

therefore

the engineering application of TiAl alloy is significantly limited. In recent years

with its technical advantages such as high efficiency and low cost

the additive manufacturing technology has great advantages in the preparation of TiAl alloy components. In this paper

the basic characteristics of TiAl alloys are introduced

the research status of the technology preparing TiAl alloy is summarized from several aspects

including traditional preparation technology

laser additive manufacturing

electron beam additive manufacturing and the wire-arc additive manufacturing. The research progress and improvement methods of mechanical properties of additive manufacturing TiAl alloy are summarized as well. Finally

the future research issues and development trends of TiAl alloy additive manufacturing are analyzed and estimated.