Microstructure and Mechanical Properties of Backward-Extruded Mg-Zn-xCa Biomaterials

Xue Jun Li; Hui Li; Shuang Shuang Zhao; Ning Ma; Qiu Ming Peng

doi:10.4028/www.scientific.net/MSF.747-748.426

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HomeMaterials Science ForumMaterials Science Forum Vols. 747-748Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of Backward-Extruded Mg-Zn-xCa Biomaterials

Abstract:

The Mg-1.0Zn-xCa (x=0.2, 0.5, 0.8, 1 wt. %) alloys were prepared by zone solidification and backward extrusion technology. The microstructure and mechanical properties of backward-extruded Mg-1.0Zn-xCa alloys were investigated. The results showed that these backward-extruded Mg-1.0Zn-xCa alloys were mainly composed of equi-axed pentagon-shaped grains and some Mg_0.9Zn_0.03 precipitates. The tensile and compressive strengths of backward-extruded Mg-1.0Zn-xCa alloys were greatly improved. The improved mechanical properties are mostly attributed to fine grain strengthening, solid solution strengthening and precipitate strengthening. The results demonstrated that the micro alloying of Ca element was one of effective method to improve the mechanical properties of Mg-1.0Zn based biomaterials.

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Periodical:

Materials Science Forum (Volumes 747-748)

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426-430

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.747-748.426

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Online since:

February 2013

Authors:

Xue Jun Li, Hui Li, Shuang Shuang Zhao, Ning Ma, Qiu Ming Peng

Keywords:

Backward Extrusion, Mg-1.0Zn-xCa Alloys

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