Medium entropy alloys for biomedical applications

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dc.contributor.authorZhang, Jiacheng
dc.contributor.authorStiehler, Martin E.
dc.contributor.authorSyed, Adnan
dc.contributor.authorJorge Jr, Alberto Moreira
dc.contributor.authorJolly, Mark R.
dc.contributor.authorGeorgarakis, Konstantinos
dc.date.accessioned2024-09-04T14:32:04Z
dc.date.available2024-09-04T14:32:04Z
dc.date.freetoread2024-09-04
dc.date.issued2024-06-07
dc.date.pubOnline2024-09-04
dc.descriptionWinner of Best Paper Award.
dc.description.abstractHigh entropy alloys (HEAs) is a rapidly emerging class of metallic materials consisting of four or more elements in equimolar or quasi-equimolar compositions. These alloys often have simple crystal structures and tailorable properties attracting significant interest for different applications. Common metallic materials for orthopaedic and dental implants include stainless steel, Co-Cr and Ti- alloys. Although these materials are widely in use, issues relevant to biocompatibility and suspected toxicity and the elastic modulus mismatch compared to that of hard tissue have been raised in recent years. High entropy alloys specifically designed for bio-medical applications can offer solutions to overcome these limitations. Bio-HEAs have emerged in the last couple of years and currently receive increasing scientific attention. In this work, we discuss on the design of new entropic alloys using only non-toxic elements such as Ti, Zr, Nb, Ta and Mo. We use a systematic approach to investigate the effect of additional elements on the microstructure and properties of the alloys starting from the binary Ti-Nb and extending to the ternary Ti-Zr-Nb, the quaternary Ti-Zr-Nb-Ta and the Ti-Zr-Nb-Ta-Mo alloy. The alloy design is building on previous work on beta Ti- alloys which has shown promising trends for reducing the elastic modulus of implant materials. The alloys were produced by arc-melting and suction casting under Ar inert atmosphere. X-ray diffraction, and scanning electron microscopy were employed to reveal their crystal structure and microstructure. respectively. The developed alloys exhibit BCC crystal structure and a dendritic microstructure in their as-cast condition. The addition of Zr and Mo was found to increase the hardness of the alloys.
dc.description.conferencename12th International Conference on Through-life Engineering Services – TESConf2024
dc.identifier.citationZhang J, Stiehler M, Syed A, et al., (2024) Medium entropy alloys for biomedical applications. In: 12th International Conference on Through-life Engineering Services – TESConf 2024, 6-7 June 2024, Cranfield, UK
dc.identifier.doi10.7996/cran.ceres-2615
dc.identifier.urihttps://doi.org/10.57996/cran.ceres-2615
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22884
dc.language.isoen
dc.publisherCranfield University
dc.publisher.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22884
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBiomedical materials
dc.subjectHigh / medium entropy alloys
dc.subjectmulti principal element alloys
dc.subjectβ-phase Ti alloy
dc.subjectTi-based alloys.
dc.titleMedium entropy alloys for biomedical applications
dc.typeConference paper
dcterms.coverageCranfield, UK
dcterms.dateAccepted2024-03-25
dcterms.temporal.endDate07-Jun-2024
dcterms.temporal.startDate06-Jun-2024

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12th International Conference on Through-life Engineering Services 2024