Journal
CORROSION SCIENCE
Volume 127, Issue -, Pages 101-109Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.08.008
Keywords
Electron beam melting (EBM); Titanium alloy; Polarization; Electrochemical impedance spectroscopy (EIS); Microstructure
Funding
- Science Fund for Distinguished Young Scholars of Hunan Province, China [2016JJ1016]
- project of Innovation and Entrepreneur Team Introduced by Guangdong Province [201301G0105337290]
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Electrochemical measurements in 1 M HCl solution were performed to investigate the corrosion behaviour of Ti-6Al-4V alloy fabricated by electron beam melting (EBM) with cylindrical axes deviating from the building direction by 0 degrees, 45 degrees, 55 degrees, and 90 degrees. Microstructure characterization before and after the tests was carried out by using a variety of methods The results suggested that the corrosion resistance of EBM alloy in 1 M HCl solution increased slightly in the order of 45 degrees, 90 degrees, 55 degrees, and 0 degrees. Such difference can be ascribed to the grain boundary density and beta phase constitution, which varied with the building direction.
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