Corrosion and tribocorrosion behaviour of Ti6Al4V produced by selective laser melting and hot pressing in comparison with the commercial alloy

The corrosion and tribocorrosion behaviour of SLM-produced Ti6Al4V alloy was studied in comparison with its HP and commercial counterparts in 9 g/L NaCl solution at body temperature. Results showed that SLM processing route influenced the electrochemical response of the SLM-produced alloy by leading...

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Bibliographic Details
Published inJournal of materials processing technology Vol. 266; pp. 239 - 245
Main Authors Toptan, Fatih, Alves, Alexandra C., Carvalho, Óscar, Bartolomeu, Flávio, Pinto, Ana M.P., Silva, Filipe, Miranda, Georgina
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.04.2019
Elsevier BV
Subjects
Beta phase
Body temperature
Corrosion
Corrosive wear
Hot pressing
Laser beam melting
selective laser melting
Ti6Al4V
Titanium base alloys
tribocorrosion
selective laser melting
tribocorrosion
Corrosion
hot pressing
Ti6Al4V
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Summary:The corrosion and tribocorrosion behaviour of SLM-produced Ti6Al4V alloy was studied in comparison with its HP and commercial counterparts in 9 g/L NaCl solution at body temperature. Results showed that SLM processing route influenced the electrochemical response of the SLM-produced alloy by leading to a relatively lower quality for the passive film due to decreased β phase and the formation of α′ phase. However, after tribocorrosion, neither the total volume loss nor the volume loss under the influence of mechanical wear and wear-accelerated corrosion showed any statistically significant difference between the processing routes.
ISSN:0924-0136
1873-4774
DOI:10.1016/j.jmatprotec.2018.11.008