期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.01.096
关键词
Selective laser melting; Nanoindentation; Titanium material; Mechanical property; Wear
类别
资金
- European Commission [BioTiNet-ITN G.A. 264635]
Ti and Ti-TiB composite materials were produced by selective laser melting (SLM). Ti showed an alpha'microstructure, whereas the Ti-TiB composite revealed a distribution of needle-like TiB particles across an a 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/E-r and H-3/Er-2 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.
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