Effect of build orientation on fracture behaviour of AlSi10Mg produced by selective laser melting

AlRedha, Sultan; Shterenlikht, Anton; Mostafavi, Mahmoud; Gelderen, Derreck Van; López-Botello, Omar; Reyes, Luis A.; Zambrano‐Robledo, Patricia del Carmen; Garza, Carlos

doi:10.1108/rpj-02-2020-0041

Cited by 16 publications

(5 citation statements)

References 32 publications

(32 reference statements)

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“…The same observation was seen in [ 44 ]. AlRedha et al [ 45 ] observed by metallography analysis using Scanning Electron Microscopy (SEM) that it is an evident interaction between the melt pool boundaries and micro-slipping in the course of the loading application. The melt pool boundaries could behave as more accessible pathways for crack propagation, resulting in a clear reduction in fracture toughness in specimens with cracks perpendicular to the build direction.…”

Section: Discussionmentioning

confidence: 99%

Influence of 3D Printing Topology by DMLS Method on Crack Propagation

et al. 2021

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The presented text deals with research into the influence of the printing layers’ orientation on crack propagation in an AlSi10Mg material specimen, produced by additive technology, using the Direct Metal Laser Sintering (DMLS) method. It is a method based on sintering and melting layers of powder material using a laser beam. The material specimen is presented as a Compact Tension test specimen and is printed in four different defined orientations (topology) of the printing layers—0°, 45°, 90°, and twice 90°. The normalized specimen is loaded cyclically, where the crack length is measured and recorded, and at the same time, the crack growth rate is determined. The evaluation of the experiment shows an apparent influence of the topology, which is essential especially for possible use in the design and technical preparation of the production of real machine parts in industrial practice. Simultaneously with the measurement results, other influencing factors are listed, especially product postprocessing and the measurement method used. The hypothesis of crack propagation using Computer Aided Engineering/Finite Element Method (CAE/FEM) simulation is also stated here based on the achieved results.

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Section: Discussionmentioning

confidence: 99%

Influence of 3D Printing Topology by DMLS Method on Crack Propagation

et al. 2021

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“…The influence of building orientation and of the heat treatment applied, as well as comparison with conventionally cast AlSi10Mg parts, are the main topics reported in the literature. The application of some post treatment causes a decrease in the strength and an increase in elongation at break, and the higher the time and the temperature of the heat treatment applied, the more significant these variations are [47][48][49][50][51].…”

Section: Tensile Propertiesmentioning

confidence: 99%

Hybrid Manufacturing of Aluminium Parts Combining Additive and Conventional Technologies—Mechanical and Thermal Properties

Silva

Candiango

Rodrigues

et al. 2022

JMMP

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Metal additive-manufacturing technologies enable the production of complex geometries. However, high manufacturing costs hinder these technologies being employed in some industries. In this sense, a hybrid strategy is presented in this paper, to achieve the best of additive and subtractive technologies, offering economic advantages. AlSi10Mg aluminium powder was deposited on AW-6082 pre-machined substrates and mechanical and thermal properties of these specimens were evaluated considering the application of a stress relief heat treatment. The results were especially good in the compressive mechanical properties and in the thermal properties: compressive properties were improved by up to 27%, and the specific heat capacity and coefficient of thermal expansion were reduced by up to 38%, compared to additively manufactured AlSi10Mg. Therefore, hybrid manufacturing can be a profitable solution (i) in thermal management applications, (ii) when compressive loads are presented, or (iii) to repair damaged parts, providing a circular economy, as presented in a case study of this paper.

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“…The considerable requirements imposed by industry have led to a dynamic development in the fabrication of complex geometries by incremental methods. The technological costs of 3D printing alone are trending downwards compared to conventional manufacturing and thus they are becoming commercially viable (AlRedha et al , 2021; Mercelis and Kruth, 2006; Mohamed et al , 2017).…”

Section: Introductionmentioning

confidence: 99%

Determination of cell size/structures and mechanical properties of additively manufactured metallic components using X-ray technique

Moj

Owsiński

Robak

et al. 2023

RPJ

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Purpose Additive manufacturing (AM), a rapidly evolving paradigm, has shown significant advantages over traditional subtractive processing routines by allowing for the custom creation of structural components with enhanced performance. Numerous studies have shown that the technical qualities of AM components are profoundly affected by the discovery of novel metastable substructures in diverse alloys. Therefore, the purpose of this study is to determine the effect of cell structure parameters on its mechanical response. Design/methodology/approach Initially, a methodology was suggested for testing porous materials, focusing on static tensile testing. For a qualitative evaluation of the cellular structures produced, computed tomography (CT) was used. Then, the CT scanner was used to analyze a sample and determine its actual relative density, as well as perform a detailed geometric analysis. Findings The experimental research demonstrates that the mechanical properties of a cell’s structure are significantly influenced by its shape during formation. It was also determined that using selective laser melting to produce cell structures with a minimum single-cell size of approximately 2 mm would be the most appropriate method. Research limitations/implications Further studies of cellular structures for testing their static tensile strength are planned for the future. The study will be carried out for a larger number of samples, taking into account a wider range of cellular structure parameters. An important step will also be the verification of the results of the static tensile test using numerical analysis for the model obtained by CT scanning. Originality/value The fabrication of metallic parts with different cellular structures is very important with a selective laser melted machine. However, the determination of cell size and structure with mechanical properties is quiet novel in this current investigation.

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Effect of build orientation on fracture behaviour of AlSi10Mg produced by selective laser melting

Cited by 16 publications

References 32 publications

Influence of 3D Printing Topology by DMLS Method on Crack Propagation

Influence of 3D Printing Topology by DMLS Method on Crack Propagation

Hybrid Manufacturing of Aluminium Parts Combining Additive and Conventional Technologies—Mechanical and Thermal Properties

Determination of cell size/structures and mechanical properties of additively manufactured metallic components using X-ray technique

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