Influence of Spatter on Porosity, Microstructure, and Corrosion of Additively Manufactured Stainless Steel Printed Using Different Island Size

Venkata Bhuvaneswari Vukkum; Taylor Sanborn; John Shepherd; Sourabh Saptarshi; Rakesh Basu; Timothy Horn; Rajeev Kumar Gupta

doi:10.3390/cryst14040328

journal article Open Access Mar 30, 2024

Influence of Spatter on Porosity, Microstructure, and Corrosion of Additively Manufactured Stainless Steel Printed Using Different Island Size

Venkata Bhuvaneswari Vukkum Taylor Sanborn John Shepherd Sourabh Saptarshi Rakesh Basu Timothy Horn

Rajeev Kumar Gupta

Crystals Vol. 14 No. 4 pp. 328 · MDPI AG

View at Publisher Save 10.3390/cryst14040328

Abstract

Specimens of 316 L stainless steel were printed using laser powder bed fusion (LPBF), a popular metal additive manufacturing (AM) technique, with varying island sizes. Not many researchers have considered the impact of spatter while optimizing LPBF printing parameters. In this research, the influence of spatter was considered while also investigating the effect of varied island size on the microstructure, surface roughness, microhardness, and corrosion resistance of LPBF-316 L. No correlation was observed between surface roughness or microhardness and minor variations in island size. However, a correlation was drawn between varied island sizes and porosity in LPBF-316 L. The specimens associated with larger island sizes showed significantly enhanced corrosion resistance due to fewer manufacturing defects and reduced porosity, attributed to the minimal influence of the spatter. Based on analysis, the LPBF parameters were revised, which lead to superior corrosion resistance of LPBF-316 L, attributed to high density and reduced porosity.

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Details

Published: Mar 30, 2024
Vol/Issue: 14(4)
Pages: 328
License: View

Authors

V

Venkata Bhuvaneswari Vukkum

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA; Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA

T

Taylor Sanborn

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA

J

John Shepherd

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA

S

Sourabh Saptarshi

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA

R

Rakesh Basu

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA

T

Timothy Horn

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA

R

Rajeev Kumar Gupta

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA

Funding

Office of Naval Research Award: N00014-21-1-2489

Cite This Article

Venkata Bhuvaneswari Vukkum, Taylor Sanborn, John Shepherd, et al. (2024). Influence of Spatter on Porosity, Microstructure, and Corrosion of Additively Manufactured Stainless Steel Printed Using Different Island Size. Crystals, 14(4), 328. https://doi.org/10.3390/cryst14040328

Influence of Spatter on Porosity, Microstructure, and Corrosion of Additively Manufactured Stainless Steel Printed Using Different Island Size

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