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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1088Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of As-Cast and As-Extruded Mg-Gd-Er-Zn-Zr Alloy

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Abstract:

The Microstructure and mechanical properties of as-cast and as-extruded Mg-12Gd-2Er-1Zn-0.6Zr alloy are investigated in the present paper. The microstructure is analyzed by OM, SEM and TEM with SAED, and the mechanical properties are valued by the room temperature tensile test. The result shows that the coarse Mg5(Gd, Er, Zn) phase in the as-cast alloy was broken during hot extrusion process, and it was distributed at the grain boundary along the extrusion direction. The enhancement in mechanical properties of the extruded alloy is mainly ascribed to the refinement of these grains. The sizes of dynamical recrystallized grains are homogeneously, which was about 7 μm. Stacking fault existed in the as-cast alloy, which has a little effect on the dynamic recrystallization because of its tiny thicknesses.

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Advances in Materials Science

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Periodical:

Advanced Materials Research (Volume 1088)

Pages:

221-226

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1088.221

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Online since:

February 2015

Authors:

Kai Wen, Wen Bo Du*, Ke Liu, Zhao Hui Wang, Shu Bo Li

Keywords:

Dynamic Recrystallization, Extrusion, Mechanical Property, Mg-Gd-Er-Zn-Zr Alloys

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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