Original scientific paper

https://doi.org/10.31803/tg-20231206200048

Influence of the LPBF Process Parameters on the Porosity of the AlSi10Mg Alloy

Sanja Šolić orcid.org/0009-0003-9074-8476 ; University North, Department of Mechanical Engineering Jurja Križanića 31b, 42000 Varaždin, Croatia *
Iva Sakač ; University North, Department of Mechanical Engineering Jurja Križanića 31b, 42000 Varaždin, Croatia
Vlado Tropša ; University North, Department of Mechanical Engineering Jurja Križanića 31b, 42000 Varaždin, Croatia
Mario Šercer orcid.org/0000-0002-4101-4092 ; Development and Training Centre for Metal Industry Metal Centre in Čakovec, Bana Josipa Jelačića 22D, 40 000 Čakovec, Croatia

* Corresponding author.

Abstract

Laser powder bed fusion (LPBF) process has a great ability to produce complex AlSi10Mg 3D components with uncommon degrees of freedom for broad span of applications in different industries. Presence of the microstructural imperfections such as porosity, dependent on the parameters of the process can be detrimental to the printed products for different engineering applications. Parameters of the process and different post-processing heat and surface treatments are recognized for decrease of the occurrence of microstructural defects and for the improvement of the mechanical properties. The influence of laser power by applying four different laser speeds at one layer thickness with a constant hatch distance, on the microstructure and microhardness of the AlSi10Mg alloy was examined in this paper. The goal of the research was to determine whether increasing the laser speed will have a significant impact on the change in microstructure and the appearance of porosity in the tested samples.

Keywords

additive manufacturing; AlSi10Mg; microstructure; microhardness; porosity; process parameters

Hrčak ID:

313800

URI

https://hrcak.srce.hr/313800

Publication date:

15.2.2024.

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