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Journal of biomedical imaging and bioengineering
Volume 1, Issue 2
October 05-06, 2017 | Las Vegas, USA
3D PRINTING CONFERENCE INNOVATION,
MODELLING, APPLICATION & IMPLEMENTATION
The attractiveness of additive manufacturing (AM)
technology relates to its capability to produce complex
components with reduced weight at a relatively short time.
The advantage of AM technology and selective laser melting
(SLM) process in particular mainly relates to its ability to
produce components layer-by-layer using high energy laser
and selective fusing process ofmetallic powder bed. Although
Titanium base alloys are considered as favourable material
for SLM process, the significantly increased solidification rate
associate with this technology results in producing modified
microstructure with increased internal stresses that can have
a detrimental effect on corrosion performance.
The present study aims at evaluating the environmental
behaviour of Ti-6Al-4V alloy produced by SLM in compression
with its counterpart wrought alloy with the same chemical
composition. Corrosion behaviour measurements in terms of
immersion test, cyclic potentiodynamic polarization analysis,
impedance spectroscopy (EIS) and stress corrosion by slow
strain rate testing (SSRT) were carried out in 3.5%NaCl
solution at ambient temperature. The microstructure and
internal stresses were evaluated by Scanning Electron
Microscopy (SEM) and X-ray diffraction analysis.
The results obtained clearly revealed that the corrosion
resistance as well as the stress corrosion endurance in
terms of time to failure of the SLM alloy was relatively
reduced compared to its counterpart wrought alloy. This
was mainly related to the increased formation of α’-phase
with martensitic structure and due to the relatively reduced
amount of βphase.
Speaker Biography
A Leon is PhD student in materials science and engineering faculty at Ben Gurion
University of the Negev in Israel. Since 2014 his main research work is on the
environmental behaviour and properties of light alloys produced by Additive
Manufacturing (AM). Moreover, his research interest includes developing of new
biodegradable alloys.
e:
Environmental behaviour of Ti-6Al-4V alloy obtained by additive manufacturing technology
A Leon1, A Shirizly2 and E. Aghion 1
1Ben-Gurion University, Israel
2Advanced Defense Systems, Israel