Application of novel constrained friction processing method to produce fine grained biomedical Mg-Zn-Ca alloy
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Authors
In order to obtain Mg alloys with fine microstructures and high mechanical performances, a novel friction-based processing method, name as “constrained friction processing (CFP)”, was investigated. Via CFP, defect-free Mg-Zn-Ca rods with greatly refined grains and high mechanical properties were produced. Compared to the previous as-cast microstructure, the grain size was reduced from more than 1 mm to around 4 µm within 3 s by a single process cycle. The compressive yield strength was increased by 350% while the ultimate compressive strength by 53%. According to the established material flow behaviors by “tracer material”, the plastic material was transported by shear deformation. From the base material to the rod, the material experienced three stages, i.e. deformation by the tool, upward flow with additional tilt, followed by upward transportation. The microstructural evolution was revealed by “stop-action” technique. The microstructural development at regions adjacent to the rod is mainly controlled by twinning, dynamic recrystallization (DRX) as well as particle stimulated nucleation, while that within the rod is related to DRX combined with grain growth.
| Original language | English |
|---|---|
| Journal | Journal of Magnesium and Alloys |
| Volume | 12 |
| Issue number | 2 |
| Pages (from-to) | 516-529 |
| Number of pages | 14 |
| ISSN | 2213-9567 |
| DOIs | |
| Publication status | Published - 02.2024 |
Bibliographical note
Funding Information:
The data is available on reasonable requests from the corresponding author. Mr. Ting Chen thanks the China Scholarship Council for the award of fellowship and funding (No. 202006230137). The authors are grateful to Mr. Günter Meister, Mr. Daniel Strerath and Mr. Gert Wiese from Helmholtz–Zentrum Hereon, Institute of Metallic Biomaterials, for the provision of the base materials used in this study, measurement of chemical composition and the guidance of the metallographic preparation. The technical support of Mr. Menno Peters and Ms. Camila Caroline de Castro, from Helmholtz–Zentrum Hereon, Institute of Materials Mechanics during this work is gratefully acknowledged.
Funding Information:
Mr. Ting Chen thanks the China Scholarship Council for the award of fellowship and funding (No. 202006230137 ). The authors are grateful to Mr. Günter Meister, Mr. Daniel Strerath and Mr. Gert Wiese from Helmholtz–Zentrum Hereon, Institute of Metallic Biomaterials, for the provision of the base materials used in this study, measurement of chemical composition and the guidance of the metallographic preparation. The technical support of Mr. Menno Peters and Ms. Camila Caroline de Castro, from Helmholtz–Zentrum Hereon, Institute of Materials Mechanics during this work is gratefully acknowledged.
Publisher Copyright: © 2023 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
- Constrained friction processing, Grain refinement, Magnesium alloys, Mechanical properties, Microstructure, Plastic deformation
- Engineering