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

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

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 pr...

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Main Authors: Shiyang Liu, Damon Kent, Nghiem Doan, Matthew Dargusch, Gui Wang
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2019-12-01
Series:Bioactive Materials
Online Access:http://www.sciencedirect.com/science/article/pii/S2452199X18300616
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spelling doaj-4253a43ed0db40a7b4c4c2513ac2ac412021-02-02T05:11:29ZengKeAi Communications Co., Ltd.Bioactive Materials2452-199X2019-12-014816Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloysShiyang Liu0Damon Kent1Nghiem Doan2Matthew Dargusch3Gui Wang4School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, 4072, Australia; ARC Research Hub for Advanced Manufacturing of Medical Devices, The University of Queensland, St Lucia, 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, 4072, Australia; Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, St Lucia, 4072, Australia; School of Science and Engineering, University of the Sunshine Coast, Maroochydore, DC, 4558, Australia; ARC Research Hub for Advanced Manufacturing of Medical Devices, The University of Queensland, St Lucia, 4072, AustraliaCentre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, St Lucia, 4072, Australia; School of Dentistry and Oral Health, Griffith University, Gold Coast, 4215, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, 4072, Australia; Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, St Lucia, 4072, Australia; ARC Research Hub for Advanced Manufacturing of Medical Devices, The University of Queensland, St Lucia, 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, 4072, Australia; Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, St Lucia, 4072, Australia; ARC Research Hub for Advanced Manufacturing of Medical Devices, The University of Queensland, St Lucia, 4072, Australia; Corresponding author. School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, 4072, Australia.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. Keywords: Biodegradable metals, Zn-Mg alloys, Deformation twinning, Mechanical properties, Hot rollinghttp://www.sciencedirect.com/science/article/pii/S2452199X18300616
collection DOAJ
language English
format Article
sources DOAJ
author Shiyang Liu
Damon Kent
Nghiem Doan
Matthew Dargusch
Gui Wang
spellingShingle Shiyang Liu
Damon Kent
Nghiem Doan
Matthew Dargusch
Gui Wang
Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
Bioactive Materials
author_facet Shiyang Liu
Damon Kent
Nghiem Doan
Matthew Dargusch
Gui Wang
author_sort Shiyang Liu
title Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
title_short Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
title_full Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
title_fullStr Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
title_full_unstemmed Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys
title_sort effects of deformation twinning on the mechanical properties of biodegradable zn-mg alloys
publisher KeAi Communications Co., Ltd.
series Bioactive Materials
issn 2452-199X
publishDate 2019-12-01
description 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. Keywords: Biodegradable metals, Zn-Mg alloys, Deformation twinning, Mechanical properties, Hot rolling
url http://www.sciencedirect.com/science/article/pii/S2452199X18300616
work_keys_str_mv AT shiyangliu effectsofdeformationtwinningonthemechanicalpropertiesofbiodegradableznmgalloys
AT damonkent effectsofdeformationtwinningonthemechanicalpropertiesofbiodegradableznmgalloys
AT nghiemdoan effectsofdeformationtwinningonthemechanicalpropertiesofbiodegradableznmgalloys
AT matthewdargusch effectsofdeformationtwinningonthemechanicalpropertiesofbiodegradableznmgalloys
AT guiwang effectsofdeformationtwinningonthemechanicalpropertiesofbiodegradableznmgalloys
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