Selective laser melting of titanium alloy with 50 wt% tantalum: Microstructure and mechanical properties

JOURNAL OF ALLOYS AND COMPOUNDS

卷:660

Article

Sing, Swee Leong^1,2  Yeong, Wai Yee^1,2  Wiria, Florencia Edith^1,3 

[1] Nanyang Technol Univ, SIMTech NTU Joint Lab Addit Mfg 3D, Singapore 637333, Singapore

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore Ctr Printing 3D, Singapore 637372, Singapore

[3] Singapore Inst Mfg Technol, Singapore 638075, Singapore

关键词: Additive manufacturing;    3D printing;    Selective laser melting;    Titanium;    Tantalum;   

DOI  :  10.1016/j.jallcom.2015.11.141

来源: Elsevier

【 摘 要 】

In this study, selective laser melting (SLM) was used to fabricate samples of titanium-tantalum (TiTa) alloy comprising 50 wt% of each element. Based on observation from scanning electron microscopy, asfabricated samples comprised of randomly dispersed pure tantalum particles in a TiTa matrix. The microstructure exhibited equiaxed grains of beta titanium and tantalum in random orientations, determined by combination of field emission scanning electron microscopy, electron back scatter diffraction and X-ray diffraction. The resulting samples have ultimate tensile strength of 924.64 +/- 9.06 MPa and elastic modulus of 75.77 +/- 4.04 GPa. The TiTa alloy produced can be a potential material for biomedical applications due to its high strength to modulus ratio, as compared to Ti6Al4V and commercially pure titanium. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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