Understanding the effect of microstructural texture on the anisotropic elastic properties of selective laser melted Ti-24Nb-4Zr-8Sn

Challis, VJ; Xu, X; Halfpenny, A; Cramer, AD; Saunders, M; Roberts, AP; Sercombe, TB

Understanding the effect of microstructural texture on the anisotropic elastic properties of selective laser melted Ti-24Nb-4Zr-8Sn

Challis, VJ Xu, X

Halfpenny, A Cramer, AD Saunders, M Roberts, AP Sercombe, TB

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Acta Materialia, 2023, 254
Issue Date:: 2023-08-01

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Field	Value	Language
dc.contributor.author	Challis, VJ
dc.contributor.author	Xu, X https://orcid.org/0000-0002-2598-3766
dc.contributor.author	Halfpenny, A
dc.contributor.author	Cramer, AD
dc.contributor.author	Saunders, M
dc.contributor.author	Roberts, AP
dc.contributor.author	Sercombe, TB
dc.date.accessioned	2024-04-29T08:59:58Z
dc.date.available	2024-04-29T08:59:58Z
dc.date.issued	2023-08-01
dc.identifier.citation	Acta Materialia, 2023, 254
dc.identifier.issn	1359-6454
dc.identifier.issn	1873-2453
dc.identifier.uri	http://hdl.handle.net/10453/178476
dc.description.abstract	Due to their low Young's Modulus, high strength and suitability for additive manufacturing, non-toxic beta-type titanium alloys are emerging as next-generation biomaterials. We present novel experimental results that demonstrate significant variation of Young's Modulus with direction for selective laser melted (SLM) biocompatible Ti-24Nb-4Zr-8Sn (Ti2448). Grain orientation data for SLM-processed Ti2448 is measured using electron backscatter diffraction. By assuming the grain orientations are fixed relative to the axes of the SLM build machine, the measured grain orientation data is used to generate a detailed microstructural finite element model of the polycrystalline SLM-processed material. The computational model provides excellent predictions of the anisotropic properties of SLM-processed Ti2448, indicating that preferential grain orientations that form during SLM processing of Ti2448 cause the experimentally measured variation of the Young's Modulus. The results show that computational models are able to accurately predict the anisotropic Young's Modulus of polycrystalline materials, and, in the context of biocompatible Ti2448 show how to tailor the modulus of SLM components by choosing the build orientation.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation	http://purl.org/au-research/grants/arc/LE110100094
dc.relation.ispartof	Acta Materialia
dc.relation.isbasedon	10.1016/j.actamat.2023.119021
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0204 Condensed Matter Physics, 0912 Materials Engineering, 0913 Mechanical Engineering
dc.subject.classification	Materials
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4017 Mechanical engineering
dc.subject.classification	5104 Condensed matter physics
dc.title	Understanding the effect of microstructural texture on the anisotropic elastic properties of selective laser melted Ti-24Nb-4Zr-8Sn
dc.type	Journal Article
utslib.citation.volume	254
utslib.for	0204 Condensed Matter Physics
utslib.for	0912 Materials Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2024-04-29T08:59:57Z
pubs.publication-status	Published
pubs.volume	254

Abstract:

Due to their low Young's Modulus, high strength and suitability for additive manufacturing, non-toxic beta-type titanium alloys are emerging as next-generation biomaterials. We present novel experimental results that demonstrate significant variation of Young's Modulus with direction for selective laser melted (SLM) biocompatible Ti-24Nb-4Zr-8Sn (Ti2448). Grain orientation data for SLM-processed Ti2448 is measured using electron backscatter diffraction. By assuming the grain orientations are fixed relative to the axes of the SLM build machine, the measured grain orientation data is used to generate a detailed microstructural finite element model of the polycrystalline SLM-processed material. The computational model provides excellent predictions of the anisotropic properties of SLM-processed Ti2448, indicating that preferential grain orientations that form during SLM processing of Ti2448 cause the experimentally measured variation of the Young's Modulus. The results show that computational models are able to accurately predict the anisotropic Young's Modulus of polycrystalline materials, and, in the context of biocompatible Ti2448 show how to tailor the modulus of SLM components by choosing the build orientation.

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http://hdl.handle.net/10453/178476