**Author details**

Ming Yan1,2\* and Peng Yu2

\*Address all correspondence to: yan.m@sustc.edu.cn

1 RMIT University, School of Aerospace, Mechanical and Manufacturing and Centre of Additive Manufacture, Melbourne, VIC, Australia

2 The South University of Science and Technology, China

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**9. Concluding remarks**

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**Author details**

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Ming Yan1,2\* and Peng Yu2

\*Address all correspondence to: yan.m@sustc.edu.cn

Additive Manufacture, Melbourne, VIC, Australia

Reviews, 1990, 35(1): 162-184.

2 The South University of Science and Technology, China

3D printing has becoming a focusing topic not only to research community and industry but also to the general public, and AM Ti and Ti alloys is one of the most promising and interested areas to be further developed. For the time being, although a few issues persist such as the microstructural inhomogeneity in the as-built material, some of the AM Ti-6Al-4V have already been able to achieve mechanical properties no lower than the corresponding ASTM specifications. The cost of the ELI AM Ti powders is one of the most challenging issues to limit the scale-up of the AM products. Employing low-cost powders to replace existing expensive powders to reduce the overall cost is a valuable research direction for further developing AM Ti-6Al-4V. Counter measurements to deal with the impurity issue associated with the high-

interstitial Ti powders can be one of the key research elements for such development.

1 RMIT University, School of Aerospace, Mechanical and Manufacturing and Centre of

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