Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Properties of Surface Engineered Metallic Parts Prepared by Additive Manufacturing

Version 1 : Received: 3 February 2021 / Approved: 4 February 2021 / Online: 4 February 2021 (09:08:01 CET)

How to cite: Stelzer, N.; Sebald, T.; Hatzenbichler, M.; Bonvoisin, B.; Lubos, B.; Scheerer, M. Properties of Surface Engineered Metallic Parts Prepared by Additive Manufacturing. Preprints 2021, 2021020128 (doi: 10.20944/preprints202102.0128.v1). Stelzer, N.; Sebald, T.; Hatzenbichler, M.; Bonvoisin, B.; Lubos, B.; Scheerer, M. Properties of Surface Engineered Metallic Parts Prepared by Additive Manufacturing. Preprints 2021, 2021020128 (doi: 10.20944/preprints202102.0128.v1).

Abstract

The potential of the Additive Manufacturing technologies is impeded by the surface finish obtained on the as-manufactured material. Therefore, the influence of various surface treatments, commonly applied to space hardware, on the mechanical properties of three selected metallic alloys (SS316L, AlSi10Mg, Ti6Al4V) prepared by using Selective Laser Melting (SLM) and Electron Beam Melting (EBM) additive manufacturing processes have been investigated. Within this study, SLM using EOS M400 and EOS M280 equipment and in addition EBM using an ARCAM Q20 machine have been applied for sample manufacturing. A half-automated shot-peening process followed by a chemical and/or electrochemical polishing or Hirtisation® process has been applied in order to obtain lower surface roughness compared to their as-received states. Special emphasize has been taken on their tensile, fatigue, and fracture toughness properties. In addition, their stress corrosion cracking (SCC) behaviour including microstructural analysis using HR-SEM have been investigated.

Subject Areas

Additive Manufacturing; Ti6Al4V; SS316L; AlSi10Mg; mechanical properties; Stress corrosion; Surface post- processing; space environment

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