Improved corrosion resistance on selective laser melting produced ti-5cu alloy after heat treatment

Authors

Peng Qin
Yujing Liu
Timothy B. Sercombe
Yuhua Li
Chuanwei Zhang
Chongde Cao
Hongqi Sun, Edith Cowan UniversityFollow
Lai-Chang Zhang, Edith Cowan UniversityFollow

Document Type

Journal Article

Publication Title

ACS Biomaterials Science and Engineering

Publisher

ACS Publications

School

School of Engineering

RAS ID

26861

Comments

Qin, P., Liu, Y., Sercombe, T., Li, Y., Zhang, C., Cao, C., ... & Zhang, L. C. (2018). Improved corrosion resistance on selective laser melting produced Ti-5Cu alloy after heat treatment. ACS Biomaterials Science & Engineering. 4(7) 2633-2642. Available here

Abstract

A Ti-5Cu alloy produced by selective laser melting exhibits a nonuniform Ti₂Cu phase structure, which contains a small amount of α′ phase in melt pool boundaries thereby resulting in reduced corrosion resistance. The heat-treatment process proposed in this work eliminates the deleterious effect of α′ phase and the Ti₂Cu phase is refined using different cooling rates, which improves the corrosion resistance. The electrochemical results indicate that the heat-treated Ti-5Cu samples have similar corrosion behavior to pure CP-Ti. A slower cooling rate produces a larger spacing between the Ti₂Cu phases in the microstructure of the sample, resulting in higher corrosion resistance. The corrosion behavior of SLM-produced Ti-5Cu and heat-treated counterparts with different microstructure are detailed discussed.

DOI

10.1021/acsbiomaterials.8b00319

Access Rights

subscription content