Effect of La-Rich Misch Metal on Microstructure and Mechanical Properties of As-Extruded Mg-14Li-3Al Alloy

Bin Liu; Jing Huai Zhang; Zhong Yi Niu; Jun Qing Li

doi:10.4028/www.scientific.net/AMR.391-392.32

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 391-392Effect of La-Rich Misch Metal on Microstructure...

Effect of La-Rich Misch Metal on Microstructure and Mechanical Properties of As-Extruded Mg-14Li-3Al Alloy

Abstract:

The as-cast Mg-14Li-3Al-(0-0.9)RE alloys were prepared with vacuum melting method, then processed by hot extrusion. The microstructure and tensile properties were investigated. The results show that both addition of RE and extrusion deformation can refine the grain size. Al₃La compounds are formed with addition of La-rich misch metal. The as-extruded Mg-14Li-3Al-0.6RE alloy obtains the finest grain size (4.28 μm) and the highest mechanical properties (σ_b =222.75 MPa, δ=23.8%), which is related to the grain refinement and the formation of Al₃La.

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Periodical:

Advanced Materials Research (Volumes 391-392)

Pages:

32-36

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.32

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Online since:

December 2011

Authors:

Bin Liu, Jing Huai Zhang, Zhong Yi Niu, Jun Qing Li

Keywords:

Mechanical Property, Mg-Li Alloys, Microstructure, Rare Earth Element (REE)

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