Additive Manufacturing
Additive Manufacturing
Additive manufacturing (AM) of metals and alloys sometimes referred to as "3D printing" is a new emerging manufacturing process which enables fabrication of three-dimensional complex shaped metal products and structures. It is based on layer by layer deposition and melting of metal powders using a high-power laser beam. Promising application fields of AM include (machine) parts for aerospace, medical, electronic, and national defense applications. However, despite of applications in various fields, research of printed products’ micro-structure and is deficient. AM may result in unexpected microstructures and properties different to those of conventional casted alloys. Therefore, our objective is to study and understand the structure-property relationships of new engineering alloys fabricated by the AM process.
(G. Choi, W. S. Choi, J. Han, P. Choi, Addit. Manuf., 36 (2020))
Recently, we have developed new Ti alloys for AM to obtain isotropic microstructures after directed energy deposition (DED). By changing the as-deposited microstructure from columnar to equiaxed, we were able to obtain isotropic tensile properties.
