Nanoindentation and wear properties of Ti and Ti-TiB composite materials produced by selective laser melting

Authors

H. Attar
S. Ehtemam-Haghighi, Edith Cowan UniversityFollow
D. Kent
I. V. Okulov
H. Wendrock
M. Bonisch
A. S. Volegov
M. Calin
J. Eckert
M. S. Dargusch

Document Type

Journal Article

Publication Title

Materials Science and Engineering: A

Publisher

Elsevier

School

School of Engineering

RAS ID

27026

Comments

Attar, H., Ehtemam-Haghighi, S., Kent, D., Okulov, I. V., Wendrock, H., Bӧnisch, M., . . . Dargusch, M. S. (2017). Nanoindentation and wear properties of Ti and Ti-TiB composite materials produced by selective laser melting. Materials Science and Engineering: A, 688, 20-26. https://doi.org/10.1016/j.msea.2017.01.096

Abstract

Ti and Ti-TiB composite materials were produced by selective laser melting (SLM). Ti showed an α΄ microstructure, whereas the Ti-TiB composite revealed a distribution of needle-like TiB particles across an α-Ti matrix. Hardness (H) and reduced elastic modulus (E_r) were investigated by nanoindentation using loads of 2, 5 and 10 mN. The results showed higher H and E_r values for the Ti-TiB than Ti due to the hardening and stiffening effects of the TiB reinforcements. On increasing the nanoindentation load, H and E_r were decreased. Comparison of the nanoindentation results with those derived from conventional hardness and compression tests indicated that 5 mN is the most suitable nanoindentation load to assess the elastic modulus and hardness properties. The wear resistance of the samples was related to their corresponding H/E_r and H³/E_r² ratios obtained by nanoindentation. These investigations showed that there is a high degree of consistency between the characterization using nanoindentation and the wear evaluation from conventional wear tests.

DOI

10.1016/j.msea.2017.01.096

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