Orientation dependency for microstructure, geometric accuracy and mechanical properties of selective laser melting AlSi10Mg lattices

Dong, Zhichao; Liu, Yabo; Li, Weijie; Liang, Jun

doi:10.1016/j.jallcom.2019.03.344

Cited by 92 publications

(41 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Melancon et al also calculated an increase, to a lesser degree, of 7% to 9% in diagonal and horizontal struts, respectively. Similar observations on strut orientation dependency are also observed in references [60,[65][66][67].…”

Section: Dimensional Inaccuraciessupporting

confidence: 87%

“…Archimedes' method [24,57,75,92] Infer porosity from weight in two fluids XCT [56,65,95,96] Calculate total porosity Optical microscopy [87,90] Average porosity determined from select cross-sections SEM [71] Surface porosity information on AM surfaces [116]. There are investigations into employing areal parameters, which aim to more adequately capture AM surface information, such as Sa, the areal counterpart of Ra [117].…”

Section: Discussion Of Measurement Methodsmentioning

confidence: 99%

“…7 XCT results from [95] showing increased porosity in the nodes of a lattice Fig. 8 Results from Dong et al [65] showing the effects of strut inclination on porosity in AlSi10Mg lattice struts. (This graph was developed from the tabulated results and is not from the original paper.…”

Section: Porositymentioning

confidence: 99%

“…Dong et al [65] investigated the influence of strut orientation on porosity for AlSi10Mg lattices. Struts were printed at varying inclination angles from the build bed and each strut was partitioned into an upper and lower region (A and B as shown in Fig.…”

Section: Porositymentioning

confidence: 99%

“…Archimedes' principle is often used to calculate porosity by comparing the mass of a lattice in two different fluids [24,57,75,92]. XCT has been used to calculate porosity [56,65,95,96]. Amani et al [95] employ a stitching method with XCT, whereby small portions of the lattice are imaged at higher magnification and are stitched together.…”

Section: Porositymentioning

confidence: 99%

See 4 more Smart Citations

Review of defects in lattice structures manufactured by powder bed fusion

Echeta

Feng

Dutton

et al. 2019

Int J Adv Manuf Technol

149

View full text Add to dashboard Cite

Additively manufactured lattice structures are popular due to their desirable properties, such as high specific stiffness and high surface area, and are being explored for several applications including aerospace components, heat exchangers and biomedical implants. The complexity of lattices challenges the fabrication limits of additive manufacturing processes and thus, lattices are particularly prone to manufacturing defects. This paper presents a review of defects in lattice structures produced by powder bed fusion processes. The review focuses on the effects of lattice design on dimensional inaccuracies, surface texture and porosity. The design constraints on lattice structures are also reviewed, as these can help to discourage defect formation. Appropriate process parameters, post-processing techniques and measurement methods are also discussed. The information presented in this paper contributes towards a deeper understanding of defects in lattice structures, aiming to improve the quality and performance of future designs.

show abstract

Section: Dimensional Inaccuraciessupporting

confidence: 87%

Section: Discussion Of Measurement Methodsmentioning

confidence: 99%

Section: Porositymentioning

confidence: 99%

Section: Porositymentioning

confidence: 99%

Section: Porositymentioning

confidence: 99%

See 3 more Smart Citations

Review of defects in lattice structures manufactured by powder bed fusion

Echeta

Feng

Dutton

et al. 2019

Int J Adv Manuf Technol

149

View full text Add to dashboard Cite

show abstract

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

Numerical and Experimental Evaluation of Structured Material for Use in Multiscale Topology Optimization

Vaverka,

Červinek,

Jaroš

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Multi‐scale topology optimization is a powerful tool for engineers seeking a design with minimum weight and maximum stiffness, using a structured material in the form of a lattice structure. Furthermore, the current trend is to combine multiple lattice topologies in one component to achieve the best possible response to local loading conditions while minimizing weight. Therefore, in this study, a numerical and experimental evaluation by compression tests in two directions is performed for six basic lattice topologies and two hypotheses are tested. The first hypothesis states that an additional weight saving of more than 30% can be achieved by a better choice of lattice topology. The second hypothesis is based on the manufacturing limitations of the Laser Powder Bed Fusion technology and the assumption that a favorable loading direction parallel to the building direction exists. The first hypothesis is only confirmed for loading in the direction parallel to the building direction and the second only for two lattice topologies. When both hypotheses are combined, the additional weight reduction of the multi‐scale topology optimization result is 44.5% according to the numerical results and 32.7% according to the experimental verification.This article is protected by copyright. All rights reserved.

show abstract

Orientation dependency for microstructure, geometric accuracy and mechanical properties of selective laser melting AlSi10Mg lattices

Cited by 92 publications

References 50 publications

Review of defects in lattice structures manufactured by powder bed fusion

Review of defects in lattice structures manufactured by powder bed fusion

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Numerical and Experimental Evaluation of Structured Material for Use in Multiscale Topology Optimization

Contact Info

Product

Resources

About