Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Build Strategy and Impact Strength of SLM Produced Maraging Steel (1.2709)

Version 1 : Received: 20 October 2020 / Approved: 21 October 2020 / Online: 21 October 2020 (12:03:04 CEST)

How to cite: Jarfors, A.E.W.; Shashidhar, A.C.G.H.; Yepur, H.K.; Steggo, J.; Andersson, N.; Stolt, R. Build Strategy and Impact Strength of SLM Produced Maraging Steel (1.2709). Preprints 2020, 2020100435 (doi: 10.20944/preprints202010.0435.v1). Jarfors, A.E.W.; Shashidhar, A.C.G.H.; Yepur, H.K.; Steggo, J.; Andersson, N.; Stolt, R. Build Strategy and Impact Strength of SLM Produced Maraging Steel (1.2709). Preprints 2020, 2020100435 (doi: 10.20944/preprints202010.0435.v1).

Abstract

The current paper aims to study the impact properties of additively manufactured Maraging steel (1.2709) using laser powder bed fusion (PBF-L) processing. The specimens were manufactured using 3Dsystems ProX 300 equipment under constant specific power input, or Andrew Number. The interactions between the build strategy and parameters, such as Hatch spacing and Scan speed was, and the impact strength and fracture were investigated. The Impact energy anisotropy was also investigated parallel and perpendicular to the build direction. Instrumented impact testing was performed, and the fractography supported that the fusion zone geometry dictated the fracture behaviour. The influence from gaseous elements such as Nitrogen, Oxygen and Hydrogen was found insignificant at the levels found in the printed material.

Subject Areas

Additive Manufacturing, Impact energy; Fracture; Hatch Spacing; Scan Speed; Process Parameters

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