Abstract
Titanium is an important material used throughout the aerospace, power generation, and medical industries with its high specific strength and excellent corrosion resistance. In recent years, the use of net shape parts has become possible due to the progress of the additive manufacturing process. In this paper, we investigated the characteristics of titanium applied in the directed energy deposition(DED) process in various additive manufacturing processes and tried to search for recent trends. Among titanium materials, CP Ti and Ti-6Al-4V alloy are the most widely used, and most of them are supplied in powder or wire forms. By using these materials, it can be melted by a heat source such as laser, electron beam, arc, plasma, etc., and it is possible to determine the additive speed according to the size and precision of a desired part. The DED process is being developed in a large-scale and complex system because it has the advantage of building large and repairing parts. Compared with advanced countries in the world, the domestic aerospace industry has not been yet developed, but it is expected to grow together with the development of additive manufacturing processes. Key words: Titanium, Additive manufacturing, DED(Directed Energy Deposition), Coaxial powder deposition
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