Abstract
This chapter covers the different types of metal powder bed fusion processes, specifically expanding on electron beam powder bed fusion (EB-PBF) and laser powder bed fusion (LPBF), and their advantages. The section also covers the starting powder material characterization and the resultant part characterization, which includes topics such as flowability, porosity, and post-processing techniques. This includes a discussion on the powder production methods, available characterization techniques for both powder and part, as well as their interpretation as it relates to part performance. The section discusses relevant examples of how this process is used in the aerospace, medical, and energy sectors to produce complex, high-value parts such as heat exchangers whose performance can be increased with individualized design and seamless one-step manufacturing. A few challenges unique to powder bed fusion processes are also discussed, including limitations in powder recycling, relatively long production times, and the need for post-processing.
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Notes
- 1.
We have used the abbreviations, LPBF and EB-PBF, for the sake of familiarity of these terms with users.
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Yarasi, S.R., Kitahara, A.R., Holm, E.A., Rollett, A.D. (2023). Powder Bed Fusion. In: Pei, E., et al. Springer Handbook of Additive Manufacturing. Springer Handbooks. Springer, Cham. https://doi.org/10.1007/978-3-031-20752-5_24
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