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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2019-12-01
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| Series: | Bioactive Materials |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2452199X18300616 |
| _version_ | 1797203629967409152 |
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| author | Shiyang Liu Damon Kent Nghiem Doan Matthew Dargusch Gui Wang |
| author_facet | Shiyang Liu Damon Kent Nghiem Doan Matthew Dargusch Gui Wang |
| author_sort | Shiyang Liu |
| collection | DOAJ |
| 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 |
| first_indexed | 2024-04-24T08:22:23Z |
| format | Article |
| id | doaj.art-4253a43ed0db40a7b4c4c2513ac2ac41 |
| institution | Directory Open Access Journal |
| issn | 2452-199X |
| language | English |
| last_indexed | 2024-04-24T08:22:23Z |
| publishDate | 2019-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Bioactive Materials |
| spelling | doaj.art-4253a43ed0db40a7b4c4c2513ac2ac412024-04-17T00:34:38ZengKeAi 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 |
| 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 |
| title | 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_short | 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 |
| url | http://www.sciencedirect.com/science/article/pii/S2452199X18300616 |
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