Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes
Biodegradable Mg alloys emerge as promising alternatives for biomedical applications, which requires a suitable combination of properties. In this work, a cast biocompatible Mg-3 wt% Zn-0.4 wt% Ca alloy, showing dendrites with large (α-Mg + Ca2Mg6Zn3) particles at the boundaries, was homogenised at...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525007750 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849429107219103744 |
|---|---|
| author | M.Á. Hernández S. Fajardo B. Torres J. Rams P. Hidalgo-Manrique |
| author_facet | M.Á. Hernández S. Fajardo B. Torres J. Rams P. Hidalgo-Manrique |
| author_sort | M.Á. Hernández |
| collection | DOAJ |
| description | Biodegradable Mg alloys emerge as promising alternatives for biomedical applications, which requires a suitable combination of properties. In this work, a cast biocompatible Mg-3 wt% Zn-0.4 wt% Ca alloy, showing dendrites with large (α-Mg + Ca2Mg6Zn3) particles at the boundaries, was homogenised at 400 °C for 24 h. Afterwards, the alloy was subjected to either rolling or heat treatment or rolling followed by heat treatment. Microstructural characterisation revealed that (1) homogenisation causes the partial dissolution of particles, (2) rolling leads to deformed dendrites with basal orientation and (3) heat treatment results in a fully recrystallised microstructure with a grain size dependent on whether the alloy was previously rolled or not and promotes both the redistribution of the particles at the grain boundaries into a more connected configuration and the formation of a fine distribution of Ca2Mg6Zn3-rich particles within the grains. Hardness and corrosion tests in Hanks’ solution revealed that compared with the as-cast alloy homogenisation leads to higher corrosion resistance but slightly lower hardness, rolling to much higher hardness but the same corrosion rate and heat treatment to higher hardness and lower corrosion rate. The mechanical and biocorrosion behaviour was mainly ascribed to particle distribution and dislocation density, grain size and texture showing a negligible effect. |
| format | Article |
| id | doaj-art-ee8d1f1e1d454612a013f804c0ab10c2 |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-ee8d1f1e1d454612a013f804c0ab10c22025-08-20T03:28:28ZengElsevierMaterials & Design0264-12752025-08-0125611435510.1016/j.matdes.2025.114355Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routesM.Á. Hernández0S. Fajardo1B. Torres2J. Rams3P. Hidalgo-Manrique4Department of Applied Mathematics, Science and Engineering of Materials and Electronic Technology, ESCET, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain; Corresponding author.Department of Surface Engineering, Corrosion and Durability, National Centre for Metallurgical Research (CENIM-CSIC), Av. Gregorio del Amo 8, 28040 Madrid, SpainDepartment of Applied Mathematics, Science and Engineering of Materials and Electronic Technology, ESCET, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain; Research Institute for Sustainability Technologies, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, SpainDepartment of Applied Mathematics, Science and Engineering of Materials and Electronic Technology, ESCET, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain; Research Institute for Sustainability Technologies, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, SpainDepartment of Applied Mathematics, Science and Engineering of Materials and Electronic Technology, ESCET, Rey Juan Carlos University, C/ Tulipán s/n, 28933 Móstoles, Madrid, SpainBiodegradable Mg alloys emerge as promising alternatives for biomedical applications, which requires a suitable combination of properties. In this work, a cast biocompatible Mg-3 wt% Zn-0.4 wt% Ca alloy, showing dendrites with large (α-Mg + Ca2Mg6Zn3) particles at the boundaries, was homogenised at 400 °C for 24 h. Afterwards, the alloy was subjected to either rolling or heat treatment or rolling followed by heat treatment. Microstructural characterisation revealed that (1) homogenisation causes the partial dissolution of particles, (2) rolling leads to deformed dendrites with basal orientation and (3) heat treatment results in a fully recrystallised microstructure with a grain size dependent on whether the alloy was previously rolled or not and promotes both the redistribution of the particles at the grain boundaries into a more connected configuration and the formation of a fine distribution of Ca2Mg6Zn3-rich particles within the grains. Hardness and corrosion tests in Hanks’ solution revealed that compared with the as-cast alloy homogenisation leads to higher corrosion resistance but slightly lower hardness, rolling to much higher hardness but the same corrosion rate and heat treatment to higher hardness and lower corrosion rate. The mechanical and biocorrosion behaviour was mainly ascribed to particle distribution and dislocation density, grain size and texture showing a negligible effect.http://www.sciencedirect.com/science/article/pii/S0264127525007750Magnesium alloysBiodegradable materialsHeat treatmentThermomechanical treatmentMicrostructureBiocorrosion |
| spellingShingle | M.Á. Hernández S. Fajardo B. Torres J. Rams P. Hidalgo-Manrique Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes Materials & Design Magnesium alloys Biodegradable materials Heat treatment Thermomechanical treatment Microstructure Biocorrosion |
| title | Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes |
| title_full | Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes |
| title_fullStr | Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes |
| title_full_unstemmed | Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes |
| title_short | Hardness and biocorrosion behaviour of a biodegradable Mg-3.0Zn-0.4Ca alloy after different processing routes |
| title_sort | hardness and biocorrosion behaviour of a biodegradable mg 3 0zn 0 4ca alloy after different processing routes |
| topic | Magnesium alloys Biodegradable materials Heat treatment Thermomechanical treatment Microstructure Biocorrosion |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525007750 |
| work_keys_str_mv | AT mahernandez hardnessandbiocorrosionbehaviourofabiodegradablemg30zn04caalloyafterdifferentprocessingroutes AT sfajardo hardnessandbiocorrosionbehaviourofabiodegradablemg30zn04caalloyafterdifferentprocessingroutes AT btorres hardnessandbiocorrosionbehaviourofabiodegradablemg30zn04caalloyafterdifferentprocessingroutes AT jrams hardnessandbiocorrosionbehaviourofabiodegradablemg30zn04caalloyafterdifferentprocessingroutes AT phidalgomanrique hardnessandbiocorrosionbehaviourofabiodegradablemg30zn04caalloyafterdifferentprocessingroutes |