Directed Energy Deposition via Artificial Intelligence-Enabled Approaches

Table 1

Pros and cons involving the use of these shielding mediums.

Pros/cons	Vacuum chamber	Inert chamber	Local shielding	Ref.
Pros	(i) It provides the highest quality environment.	(i) It provides the highest quality environment.	(i) There are some quality compromises which is acceptable.	[10]
Cons	(i) It requires a heavy and expensive reinforced chamber to withstand vacuum forces.	(i) It is costly and time consuming to fill the whole chamber with inert gas.	(i) It is pretty expensive because of its enclosed environment.; (ii) It provides less consistency and atmosphere purity.	[10]
	(ii) Elements in the melt pool evaporate because of the low-pressure environment.