The laser powder directed energy deposition process is a metal additive manufacturing technique, which can fabricate metal parts with high geometric and material flexibility. The unique feature of in-situ powder feeding makes it possible to customize the elemental composition using elemental powder mixture during the fabrication process. Thus, it can be potentially applied to synthesize industrial alloys with low cost, modify alloys with different powder mixtures, and design novel alloys with location-dependent properties using elemental powder blends as feedstocks. This paper provides an overview of using a laser powder directed energy deposition method to fabricate various types of alloys by feeding elemental powder blends. At first, the advantage of laser powder directed energy deposition in manufacturing metal alloys is described in detail. Then, the state-of-the-art research and development in alloys fabricated by laser powder directed energy deposition through a mix of elemental powders in multiple categories is reviewed. Finally, critical technical challenges, mainly in composition control are discussed for future development.
Y. Chen et al., "A Review on Metallic Alloys Fabrication using Elemental Powder Blends by Laser Powder Directed Energy Deposition Process," Materials, vol. 13, no. 16, MDPI, Aug 2020.
The definitive version is available at https://doi.org/10.3390/MA13163562
Mechanical and Aerospace Engineering
Keywords and Phrases
Advanced materials; Alloy design; Composition control; Directed energy deposition; Elemental powder mixture; Metal additive manufacturing
International Standard Serial Number (ISSN)
Article - Journal
© 2020 The Authors, All rights reserved.
01 Aug 2020