TY - JOUR

T1 - Nanoindentation and wear properties of Ti and Ti-TiB composite materials produced by selective laser melting

AU - Attar, Hooyar

AU - Ehtemam-Haghighi, S.

AU - Kent, D.

AU - Okulov, I. V.

AU - Wendrock, H.

AU - Bönisch, Matthias

AU - Volegov, A. S.

AU - Calin, Mariana

AU - Eckert, Jürgen

AU - Dargusch, M.S.

PY - 2017/3

Y1 - 2017/3

N2 - 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 (Er) were investigated by nanoindentation using loads of 2, 5 and 10 mN. The results showed higher H and Er 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 Er 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/Er and H3/Er2 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.

AB - 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 (Er) were investigated by nanoindentation using loads of 2, 5 and 10 mN. The results showed higher H and Er 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 Er 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/Er and H3/Er2 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.

U2 - 10.1016/j.msea.2017.01.096

DO - 10.1016/j.msea.2017.01.096

M3 - Article

VL - 688

SP - 20

EP - 26

JO - Materials science and engineering: A, Structural materials: properties, microstructure and processing

JF - Materials science and engineering: A, Structural materials: properties, microstructure and processing

SN - 0921-5093

ER -