Surface modification of additively manufactured 18% Nickel Maraging steel by ultrasonic vibration-assisted ball burnishing

Inigo Flores Ituarte, Mika Salmi, Suvi Papula, Juha Huuki, Björn Hemming, Eric Coatanea, Seppo Nurmi, Iikka Virkkunen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The scope of this research is to characterize and optimize the vibration-assisted ball burnishing of additively manufactured 18% Nickel Maraging steel for tooling applications. We evaluate the suitability of vibration-assisted ball burnishing as an alternative method to post-process additively manufactured tool steel. To do so, we assessed a single pass post-processing technique to enhance surface roughness, surface micro-hardness, and residual stress state. Results show that ultrasonic burnishing after age hardening functionalizes additively manufactured surfaces for tooling applications creating a beneficial compressive residual stress state on the surface. The surface micro-hardness (HV1) varied between 503 and 630 HV1, and the average surface roughness (Ra) varied between 1.31 and 0.14 µm, depending on process parameters with a maximum productivity rate of 41.66 cm2/min making it an alternative approach to functionalize additively manufactured tool components.
Original languageEnglish
JournalJOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING: TRANSACTIONS OF THE ASME
DOIs
Publication statusE-pub ahead of print - 14 Apr 2020
MoE publication typeA1 Journal article-refereed

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