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Journal Article

Making strong Al(Mg)–Al3Mg2 composites


Zhou,  Dengshan
Mechanism-based Alloy Design, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China;
State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China;

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Zhou, D., Zhang, X., & Zhang, D. (2021). Making strong Al(Mg)–Al3Mg2 composites. Materialia, 16: 101099. doi:10.1016/j.mtla.2021.101099.

Cite as: https://hdl.handle.net/21.11116/0000-0009-71FC-C
Size control of β-Al3Mg2 precipitates, formation of clean Al(Mg)/Al3Mg2 interfaces and refinement of matrix microstructures are key structural factors in the development of strong Al(Mg)-Al3Mg2 composites. Here, we combine severe plastic deformation with rapid thermomechanical powder consolidation to attain a desirable synergy of these structural factors to achieve a high strength. The study demonstrates that the fabricated composite containing 1.2vol.Al3Mg2 precipitates shows a high yield strength of ~700 MPa in tension and ~850 MPa in compression, opening up a new pathway for developing lighter Al-Mg alloy based composites with higher strength. © 2021