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

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:688

Article

Attar, H.¹  Ehtemam-Haghighi, S.²  Kent, D.^1,3  Okulov, I. V.⁴  Wendrock, H.⁵  Boenisch, M.⁵  Volegov, A. S.⁶  Calin, M.⁵  Eckert, J.^7,8  Dargusch, M. S.¹ 

[1] Univ Queensland, Sch Mech & Min Engn, Queensland Ctr Adv Mat Proc & Mfg, Brisbane, Qld 4072, Australia

[2] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia

[3] Univ Sunshine Coast, Sch Sci & Engn, Maroochydore, Qld 4558, Australia

[4] Helmholtz Zentrum Geesthacht, Inst Mat Res, Div Mat Mech, Geesthacht, Germany

[5] IFW Dresden, Inst Complex Mat, POB 270116, D-01171 Dresden, Germany

[6] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620002, Russia

[7] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

[8] Univ Leoben, Dept Mat Phys, Jahnstr 12, A-8700 Leoben, Austria

关键词: Selective laser melting;    Nanoindentation;    Titanium material;    Mechanical property;    Wear;   

DOI  :  10.1016/j.msea.2017.01.096

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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