Improving microstructural homogeneity and reducing grain size of Zn-3Mg alloy through ECAP

Recently, Zn and its alloys have been investigated due to its lower degradation rate than that of Mg-based alloys. However, it as-cast grainsize and microstructure homogeneity still required further enhancement. This research works aims to improve these properties on eutectic Zn-3Mg alloy via equal...

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Bibliographic Details
Main Authors: Dambatta, M. S., Izman, S., Auwal, S. T., Kurniawan, D., Ramesh, S., Abdullahi, U., Ayu, H. Mas, Shah, A., Gidado, A. Y., Ibrahim, Auwal, Ibrahim, Musa Alhaji
Format: Conference Proceeding
Language:English
Subjects:
Biodegradability
Casting alloys
Degradation
Equal channel angular pressing
Eutectic alloys
Grain size
Heat treatment
Homogeneity
Magnesium base alloys
Mechanical properties
Microstructure
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Summary:Recently, Zn and its alloys have been investigated due to its lower degradation rate than that of Mg-based alloys. However, it as-cast grainsize and microstructure homogeneity still required further enhancement. This research works aims to improve these properties on eutectic Zn-3Mg alloy via equal channels angular pressing (ECAP). Cast Zn-3Mg sample was heat treated at 370°C for 15hrs and quenched in water before ECAP processing at temperature of 200°C. Results revealed that, heat treatment followed by ECAP was effective in reducing the grain size of the as-cast alloy to 2 µm from 48 µm after 2-passes. This two-step processing remarkably increases the sample microstructure homogeneity. The study revealed that heat treatment followed by 2-ECAP passes was beneficial in enhancing the mechanical properties and degradation behaviour of Zn3Mg alloy as potential use for biodegradable implants material.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0110481