Surface modification of additively manufactured 18% nickel maraging steel by ultrasonic vibration-assisted ball burnishing

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

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

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
Article number4046903
Number of pages11
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Volume142
Issue number7
DOIs
Publication statusPublished - Jul 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Additive manufacturing
  • Maraging steel
  • Metal powder bed fusion
  • Post-processing
  • Surface modification
  • Vibration-assisted ball burnishing

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