Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed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

Anders E. W. Jarfors
* ORCID logo ,
Akash Chikke Gowda Hosapalya Shashidhar
,
Hrushi Kailash Yepur
,
Jacob Steggo
,
Nils-Eric Andersson
,
Roland Stolt
Version 1 : Received: 20 October 2020 / Approved: 21 October 2020 / Online: 21 October 2020 (12:03:04 CEST)

A peer-reviewed article of this Preprint also exists.

Jarfors, A.E.W.; Shashidhar, A.C.G.H.; Yepur, H.K.; Steggo, J.; Andersson, N.-E.; Stolt, R. Build Strategy and Impact Strength of SLM Produced Maraging Steel (1.2709). Metals 2021, 11, 51. Jarfors, A.E.W.; Shashidhar, A.C.G.H.; Yepur, H.K.; Steggo, J.; Andersson, N.-E.; Stolt, R. Build Strategy and Impact Strength of SLM Produced Maraging Steel (1.2709). Metals 2021, 11, 51.

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.

Keywords

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

Subject

Chemistry and Materials Science, Biomaterials

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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