Surface Texture Characterization of Metal Selective Laser Melted Part with Varying Surface Inclinations

Shubhavardhan Ramadurga Narasimharaju, Weidong Liu, Wenhan Zeng, TianLong See, Paul Scott, Jane Jiang, Shan Lou

Research output: Contribution to journalArticlepeer-review

Abstract

Additive manufacturing offers the advantage of infinite freedom to design and fabricate complex parts at reduced lead-time. However, the surface quality of additively manufactured parts remains well behind the conventionally processed counterparts. This paper aims to systematically investigate the impact of varying surface inclination angles with respect to the build direction on the resultant surface textures. A bespoke metal truncheon artifact with inclination angles varying from 0 deg to 180 deg was built by selective laser melting. Focus variation microscopy was used to measure the topography of inclined surfaces with a tilt angle of up to 132 deg. The measurement data were then analyzed to characterize the staircase effect and the particles adherent to the artifact surface. Areal surface texture parameters, including height parameters, spatial parameters, functional parameters, and feature parameters, were explored to quantify the general surface topography, the staircase effect, and the particle features. The areal surface texture characterization and particle analysis reveal the resulted surface topographies are strongly correlated with the surface inclination angles.

Original languageEnglish
Article number051106
Number of pages17
JournalJournal of Tribology
Volume143
Issue number5
Early online date29 Mar 2021
DOIs
Publication statusPublished - 1 May 2021

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