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Microstructure and mechanical behavior of Ti-6Al-4V produced by rapid-layer manufacturing, for biomedical applications.

Authors :
Murr LE
Quinones SA
Gaytan SM
Lopez MI
Rodela A
Martinez EY
Hernandez DH
Martinez E
Medina F
Wicker RB
Source :
Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2009 Jan; Vol. 2 (1), pp. 20-32. Date of Electronic Publication: 2008 May 29.
Publication Year :
2009

Abstract

The microstructure and mechanical behavior of simple product geometries produced by layered manufacturing using the electron beam melting (EBM) process and the selective laser melting (SLM) process are compared with those characteristic of conventional wrought and cast products of Ti-6Al-4V. Microstructures are characterized utilizing optical metallography (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and included alpha (hcp), beta (bcc) and alpha(') (hcp) martensite phase regimes which give rise to hardness variations ranging from HRC 37 to 57 and tensile strengths ranging from 0.9 to 1.45 GPa. The advantages and disadvantages of layered manufacturing utilizing initial powders in custom building of biomedical components by EBM and SLM in contrast to conventional manufacturing from Ti-6Al-4V wrought bar stock are discussed.

Details

Language :
English
ISSN :
1878-0180
Volume :
2
Issue :
1
Database :
MEDLINE
Journal :
Journal of the mechanical behavior of biomedical materials
Publication Type :
Academic Journal
Accession number :
19627804
Full Text :
https://doi.org/10.1016/j.jmbbm.2008.05.004