1. Achieving high strength and high ductility in submicron-MgO/AZ31 composites with an innovative honeycomb-like structure
- Author
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Chengduo Wang, Fujie Ren, Haoyuan Liu, Qingkui Li, and Benshuang Sun
- Subjects
Composites ,Submicron MgO reinforcements ,Specific structures ,Mechanical properties ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Honeycomb-like AZ31 matrix composites with 1, 2, and 4 wt% submicron-MgO were prepared using low-energy milling and extrusion. The composites consist of fine-grained and coarse-grained zones. The fine-grained zones enriched with submicron MgO form a honeycomb-like structure, and the coarse grains without MgO are filled into unit cells. Both the strengths and elongations of the newly developed MgO/AZ31 composites are enhanced compared with AZ31. Specifically, the tensile strength of composites containing 1 wt% MgO is improved to 344.1 MPa, and at the same time, its elongation is increased up to 21.5%. The excellent strength-ductility combination is due to the introduction of submicron-MgO reinforcements with unique distribution. Such achievements could be beneficial to the structural design of composites.
- Published
- 2023
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