Healing cracks in selective laser melting by 3D laser shock peening
Kalentics, Nikola; Sohrabi, Navid; Tabasi, Hossein Ghasemi; Griffiths, Seth; Jhabvala, Jamasp; Leinenbach, Christian; Burn, Andreas; Loge, Roland E.
2019

Abstract

Selective Laser Melting (SLM) of Ni-based superalloys such as CM247LC is prone to weld-cracking. This paper investigates how to suppress cracks by repeatedly applying Laser Shock Peening (LSP) during the building phase of SLM. Samples made of CM247LC were processed with different LSP parameters, and the influence on bulk crack density has been quantified. It was observed that for all chosen conditions, a significant decrease of up to 95% could be achieved, demonstrating the potential of the new hybrid 3D LSP method in improving SLM processability of alloys sensitive to cracking.

Details

Title Healing cracks in selective laser melting by 3D laser shock peening
Author(s) Kalentics, Nikola ; Sohrabi, Navid ; Tabasi, Hossein Ghasemi ; Griffiths, Seth ; Jhabvala, Jamasp ; Leinenbach, Christian ; Burn, Andreas ; Loge, Roland E.
Published in Additive Manufacturing
Volume 30
Pages 100881
Date 2019-12-01
Publisher Amsterdam, ELSEVIER
ISSN 2214-8604
2214-7810
Keywords
DOI https://doi.org/10.1016/j.addma.2019.100881
Other identifier(s) View record in Web of Science
Laboratories LMTM
Record Appears in Scientific production and competences > EPFL Partners > Neuchâtel Campus > LMTM - Laboratory of Thermomechanical Metallurgy - PX Group Chair
Scientific production and competences > STI - School of Engineering > IMX - Institute of Materials > LMTM - Laboratory of Thermomechanical Metallurgy
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2019-12-26

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