Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys

Shiyang Liu; Damon Kent; Nghiem Doan; Matthew Dargusch; Gui Wang

doi:10.1016/j.bioactmat.2018.11.001

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Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys

Journal article

Open access

Peer reviewed

Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys

Shiyang Liu, Damon Kent, Nghiem Doan, Matthew Dargusch and Gui Wang

Bioactive Materials, Vol.4(1), pp.8-16

2019

DOI: https://doi.org/10.1016/j.bioactmat.2018.11.001

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Abstract

biodegradable metals

Zn-Mg alloys

deformation twinning

mechanical properties

hot rolling

To satisfy the property requirements for biodegradable medical implants, Zn alloyed with low levels of Mg (≤0.8 wt%) has attracted increased research interest. In the present study, deformation twinning was observed in tensile tests and twinning appears to have an adverse impact on ductility. The profuse twinning in the as-cast Zn-Mg alloys accelerated crack growth in tension due to twinning impingement which caused local stress concentrations and initiates cracking. As-rolled Zn-Mg alloys have better ductility than their as-cast counterparts due to the inhibition of twinning by the refined Mg2Zn11 intermetallic phase and the finer grain size.

Details

Title: Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
Authors: Shiyang Liu (Author) - University of Queensland
Damon Kent (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Nghiem Doan (Author) - University of Queensland
Matthew Dargusch (Author) - University of Queensland
Gui Wang (Author) - University of Queensland
Publication details: Bioactive Materials, Vol.4(1), pp.8-16
Publisher: Ke Ai Publishing
Date published: 2019
DOI: 10.1016/j.bioactmat.2018.11.001
ISSN: 2452-199X
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451457502621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Engineering, Biomedical; Materials Science, Biomaterials