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Microstructures of Electron Beam Melted (EBM) Biomaterial Ti-6Al-4V

Published online by Cambridge University Press:  15 March 2011

Adnan Safdar  and
Liu-Ying Wei
Adnan Safdar
Affiliation:
Division of Materials Science, Malmö University, SE-205 06 Malmö, Sweden
Liu-Ying Wei
Affiliation:
Division of Materials Science, Malmö University, SE-205 06 Malmö, Sweden
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Abstract

Ti-6Al-4V alloy is an attractive biomaterial. The current work evaluates the microstructures of the solid and net-shape Ti-6Al-4V alloy produced by Electron Beam Melting (EBM) system using SEM/EDX and optical microscope. The microstructures are influenced by the cooling rate, processing parameters of the EBM system and re-heating of the existing layer during the melting of subsequent layers. Layer structure and columnar grains have been observed, with growing direction parallel to the built direction. The interior of these grains consists of alternating α / β phases. The β phase in the colonies resembles rod shape embedded in the α platelet. Along the grain boundaries more or less continuous α layers were observed. In comparison to solid samples uneven surfaces and pores were seen in the net shape structure. Microhardness evaluation of the EBM produced alloys was also carried out and compared with conventionally produced alloys.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1132: Symposium Z – Mechanics of Biological and Biomedical Materials , 2008 , 1132-Z09-06
Copyright
Copyright © Materials Research Society 2009

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References

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