Impact of Yttrium on corrosion properties of titanium as a grain refiner

Materials Today Communications(2021)

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Abstract
•The addition of Y into CP-Ti successfully induced the Y segregation, resulting in both the grain refinement.•The presence of the Y precipitates over 1 um seemed to deteriorate the corrosion resistance of the Ti-Y alloys.•The comparative corrosion resistance of the Ti-0.1Y to CP-Ti resulted from the thickened oxide layer due to the micro-galvanic effect.
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Key words
CP-Ti,Grain boundary segregation,Yttrium,Grain refinement,Corrosion
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