Development and Testing of 316L Stainless Steel Metal Additive Manufacturing Test Articles for Powder Bed Fusion and Directed Energy Deposition Processes

2020 ◽  
pp. 250-277
Author(s):  
Jessica L. Coughlin ◽  
Trevor G. Hicks ◽  
Patrick S. Dougherty ◽  
Steven A. Attanasio
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Energy Deposition ◽  
316L Stainless Steel ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Metal Additive Manufacturing ◽  
Deposition Processes ◽  
Directed Energy ◽  
Metal Additive

Failures Related to Metal Additive Manufacturing

2021 ◽  
pp. 250-265
Author(s):  
Daniel P. Dennies ◽  
S. Lampman
Keyword(s):  
Quality Control ◽  
Additive Manufacturing ◽  
Powder Bed Fusion ◽  
Key Factors ◽  
Powder Bed ◽  
Metal Additive Manufacturing ◽  
Design Considerations ◽  
Directed Energy ◽  
Am Processes ◽  
Metal Additive

Abstract This article provides an overview of metal additive manufacturing (AM) processes and describes sources of failures in metal AM parts. It focuses on metal AM product failures and potential solutions related to design considerations, metallurgical characteristics, production considerations, and quality assurance. The emphasis is on the design and metallurgical aspects for the two main types of metal AM processes: powder-bed fusion (PBF) and directed-energy deposition (DED). The article also describes the processes involved in binder jet sintering, provides information on the design and fabrication sources of failure, addresses the key factors in production and quality control, and explains failure analysis of AM parts.

scholarly journals Material Reuse in Laser Powder Bed Fusion: Side Effects of the Laser—Metal Powder Interaction

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 341 ◽  
Author(s):  
Eleonora Santecchia ◽  
Stefano Spigarelli ◽  
Marcello Cabibbo
Keyword(s):  
Additive Manufacturing ◽  
Side Effects ◽  
Metal Powder ◽  
Three Dimensional ◽  
High Energy ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Metal Additive Manufacturing ◽  
Metal Additive

Metal additive manufacturing is changing the way in which engineers and designers model the production of three-dimensional (3D) objects, with rapid growth seen in recent years. Laser powder bed fusion (LPBF) is the most used metal additive manufacturing technique, and it is based on the efficient interaction between a high-energy laser and a metal powder feedstock. To make LPBF more cost-efficient and environmentally friendly, it is of paramount importance to recycle (reuse) the unfused powder from a build job. However, since the laser–powder interaction involves complex physics phenomena and generates by-products which might affect the integrity of the feedstock and the final build part, a better understanding of the overall process should be attained. The present review paper is focused on the clarification of the interaction between laser and metal powder, with a strong focus on its side effects.

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