Additive manufacturing of Ti-6Al-4V horizontal hollow struts with submillimetre wall thickness by laser powder bed fusion

Noronha, J.; Qian, Ma; Leary, Martin; Kyriakou, E.; Almalki, Abduladheem; Brudler, Simon; Brandt, Milan

doi:10.1016/j.tws.2022.109620

Cited by 18 publications

(8 citation statements)

References 24 publications

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“…53 Furthermore, FCC and FCCZ lattices do not contain unsupported horizontal struts, making their LPBF fabrication much easier when compared to complex topologies like the octet truss. 33…”

Section: Methodsmentioning

confidence: 99%

“…53 Furthermore, FCC and FCCZ lattices do not contain unsupported horizontal struts, making their LPBF fabrication much easier when compared to complex topologies like the octet truss. 33 Table 1 summarizes the geometrical parameters for the AlSi10Mg hollow-strut lattice designs of this study. The number of cells is 6 Â 6 Â 6 (along the x, y, and z directions).…”

Section: Design Of Alsi10mg Hslsmentioning

confidence: 99%

“…It focuses on wall thickness where the scan paths always follow the slice contour without using the conventional hatching strategy. This strategy has proved effective for Ti-6Al-4V, 30,33,34 but it has not been subjected to serious assessment a Refer to the subsequent Fig. 2 for the implications of the number of border scans 1B, 2B, and 3B.…”

Section: Laser Scan Strategymentioning

confidence: 99%

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AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Noronha,

Leary,

Brandt

et al. 2024

Mater. Adv.

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“…53 Furthermore, FCC and FCCZ lattices do not contain unsupported horizontal struts, making their LPBF fabrication much easier when compared to complex topologies like the octet truss. 33…”

Section: Methodsmentioning

confidence: 99%

Section: Design Of Alsi10mg Hslsmentioning

confidence: 99%

Section: Laser Scan Strategymentioning

confidence: 99%

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AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Noronha,

Leary,

Brandt

et al. 2024

Mater. Adv.

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“…The present literature is dominated by studies on the feasibility of manufacturing hollow-strut lattice structures. [17,28,[37][38][39][40][41] There are very few studies on the mechanical properties of hollowstrut lattice structures. [37] A previous study on hollow triply periodic minimal surface (TPMS) lattices studied the addition of different tubular-strengthening structures at different positions of TPMS.…”

Section: Tensile Test Of the Hollow Lattice Structuresmentioning

confidence: 99%

“…Another previous study also examined the minimum achievable hollow-strut size and orientation of the lattice struts of Ti-6Al-4V alloy processed by LPBF. [27,28] A previous study on the manufacture of hollowstrut lattice structures is dominated by multistep fabrication processes (self-propagating photopolymer waveguide [SPPW]). [29] The multistep processing takes a long time and is complicated thus impacting affordability and production efficiency.…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Computational Modeling Study on Additively Manufactured Micro‐Architectured Ti–24Nb–4Zr–8Sn Hollow‐Strut Lattice Structures

et al. 2023

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Herein, the design, manufacturing, and mechanical testing of hollow‐strut lattice structures of the metastable β‐titanium alloy Ti–24Nb–4Zr–8Sn (Ti2448) are performed. Due to the absence of studies in the literature, this study focusses on two important aspects: 1) the designing of micro‐architectured lattice structures and 2) metastable β‐titanium alloy. Face‐centered cubic (FCC) and body‐centered cubic (BCC) hollow‐strut lattices are designed by computer‐aided design and manufactured by laser powder bed fusion. The microstructure of the hollow lattices shows plates of α″‐martensite phase within the β phase. The FCC hollow lattice structure shows higher tensile strength compared to the BCC hollow lattice structure, while the load‐bearing capability of the FCC hollow lattice structure is lower than that of the BCC hollow lattice structure. At lower strains, the tensile force‐displacement curve of the hollow lattice structure matches the simulated tensile force‐displacement curve. At higher strains, a large deviation in the force‐displacement curve is observed in the hollow lattices.

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Titanium Multi‐Topology Metamaterials with Exceptional Strength

Noronha,

Dash,

Rogers

et al. 2024

Advanced Materials

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Additively manufactured metamaterials are architectured cellular materials that can be engineered through structural innovations to achieve unusual mechanical and multifunctional properties. Among these, hollow‐strut lattice (HSL) metamaterials have proven to allow outstanding structural efficiency, with a multifunctional architecture ideal for lightweight, biomedical, microfluidic, and thermal engineering. To capitalize on their structural efficiency and significantly extend their mechanical envelope, we have seamlessly integrated a thin‐plate lattice (TPL) topology into the inner hollow space of an HSL topology. This integration serves a dual purpose: to radically enhance the resistance of the irregular HSL nodes to deformation and to uniformly distribute the applied stresses in the new topology for unparalleled strength. Fabricated in titanium alloy Ti‐6Al‐4 V with densities of 1.0‐1.8 g/cm3 by additive manufacturing, our thin‐plate hollow‐strut lattice (TP‐HSL) metamaterials achieve relative yield strength that well surpasses the empirical upper limits of all cellular metals, including HSL and solid‐strut lattice (SSL) materials made from various metallic alloys. Furthermore, their absolute yield strength drastically exceeds that of magnesium alloys with comparable densities while inheriting the high corrosion resistance, biocompatibility, heat resistance, and other unique attributes of Ti‐6Al‐4 V. Titanium multi‐topology metamaterials expand the boundaries of lightweight multifunctional metallic materials.This article is protected by copyright. All rights reserved

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Additive manufacturing of Ti-6Al-4V horizontal hollow struts with submillimetre wall thickness by laser powder bed fusion

Cited by 18 publications

References 24 publications

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

An Experimental and Computational Modeling Study on Additively Manufactured Micro‐Architectured Ti–24Nb–4Zr–8Sn Hollow‐Strut Lattice Structures

Titanium Multi‐Topology Metamaterials with Exceptional Strength

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