Building direction dependence of corrosion resistance property of Ti–6Al–4V alloy fabricated by electron beam melting. (October 2017)

• Record Type: Journal Article
• Authors: Gong, Xiaojuan; Cui, Yujie; Wei, Daixiu; Liu, Bin; Liu, Ruiping; Nie, Yan; Li, Yunping
• Is Part Of: Corrosion science. Volume 127(2017)
• Page Start: 101
• Page End: 109
• Publication Date: 2017-10
• Subjects: Electron beam melting (EBM) -- Titanium alloy -- Polarization -- Electrochemical impedance spectroscopy (EIS) -- Microstructure; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2017.08.008
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Electrochemical measurements of EBM Ti–6Al–4V alloy were carried out. Corrosion resistance in 1 M HCl solution is different along building direction. Grain boundary and β phase along building direction account for the difference. Abstract: 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°, 45°, 55°, and 90°. 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°, 90°, 55°, and 0°. Such difference can be ascribed to the grain boundary density and β phase constitution, which varied with the building direction.