Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 9, Issue 2, Pages 1273-1285Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2019.11.054
Keywords
17-4PH stainless steel; Selective laser melting; Additive manufacturing; Powder bed fusion; Laser beam melting
Funding
- Junta de Castilla y Leon
- FEDER [LE027P17]
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The advantages of Additive Manufacturing (AM) processes are well known. Particularly, those AM techniques which are used to manufacture metallic parts are of great interest to industry due to the good mechanical behaviour of metallic alloys. Despite this, the quality of the manufactured parts is still an important issue due to the wide range of parameters that can affect them. In some powder bed fusion techniques, such as Selective Laser Melting (SLM), not all the initially distributed metallic powder is used in the process. There is an unmolten portion that can be recycled to ensure both the economic and environmental viability of the process. Even though this powder is unmolten, it is thermally affected due to the high temperatures attained during the process. This fact affects the powder properties and, consequently, the properties of the manufactured parts. Therefore, an analysis of the recycling effects of SLM metallic powders is an important issue in order to establish good recycling procedures and to optimise the process performance. (C) 2019 Published by Elsevier B.V.
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