Microstructural characterization and mechanical properties of Mg-Zr-Ca alloys prepared by hot-extrusion for biomedical applications


Autoria(s): Zhou, Ying-Long; Luo, Dong-Mei; Hu, Wang-Yu; Li, Yuncang; Hodgson, Peter; Wen, Cuié
Data(s)

01/08/2011

Resumo

This paper investigated the microstructural characterization and mechanical properties of Mg-Zr-Ca alloys prepared by hot-extrusion for potential use in biomedical applications. Mg-Zr-Ca alloys were fabricated by commercial pure Mg (99.9%), Ca (99.9%), and master Mg-33% Zr alloy (mass%). The microstructural characterization of the hot-extruded Mg-Zr-Ca alloys was examined by X-ray diffraction analysis and optical microscopy, and the mechanical properties were determined from tensile tests. The experimental results indicate that the hot-extruded Mg-Zr-Ca alloys with 1 mass% Ca are composed of one single phase and those alloys with 2 mass% Ca consist of both Mg2Ca and α phase. The hot-extruded Mg-Zr-Ca alloys exhibit equiaxed granular microstructures and the hot-extrusion process can effectively increase both the tensile strength and ductility of Mg-Zr-Ca alloys. The hot-extruded Mg-1Zr-1Ca alloy (mass%) exhibits the highest strength and best ductility among all the alloys, and has much higher strength than the human bone, suggesting that it has a great potential to be a good candidate for biomedical application.

Identificador

http://hdl.handle.net/10536/DRO/DU:30044090

Idioma(s)

eng

Publicador

American Scientific Publishers

Relação

http://dro.deakin.edu.au/eserv/DU:30044090/li-microstructuralcharacterization-2011.pdf

http://hdl.handle.net/10.1166/asl.2011.1741

Direitos

2011, American Scientific Publishers

Palavras-Chave #hot-extrusion #Mg-Zr-Ca alloy #microstructure #mechanical property #biomaterial
Tipo

Journal Article