Surface Topography and Melt Pool Behavior in Rapid Turnaround Regions of Laser Powder Bed Fusion Additive Manufacturing of Nickel Superalloy 625

Published

July 13, 2023

Author(s)

Jason Fox, Christopher Evans, Jordan Weaver, Jesse Redford

Abstract

The complexity and vast number of influencing variables in laser powder bed fusion (LPBF) have hindered the development of correlations between surface topography and part performance or process variables. To address this, the melt pool behavior in regions of the part where a rapid back-and-forth scan strategy occurs is investigated. Analysis of surface topography and melt pool cross section geometry on nickel superalloy 625 samples is presented to identify relationships to melt pool behavior. From this, a conceptual model is developed and the implication this has for the development of strong, process-informed correlations is discussed.

Citation

CIRP Annals-Manufacturing Technology

Volume

72

Issue

1

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.cirp.2023.04.024

Local Download

Keywords

additive manufacturing, surface analysis, nickel alloy

Citation

Fox, J. , Evans, C. , Weaver, J. and Redford, J. (2023), Surface Topography and Melt Pool Behavior in Rapid Turnaround Regions of Laser Powder Bed Fusion Additive Manufacturing of Nickel Superalloy 625, CIRP Annals-Manufacturing Technology, [online], https://doi.org/10.1016/j.cirp.2023.04.024, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936250 (Accessed October 9, 2025)