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Study of Direct Fabrication of a Ti-6Al-4V Impeller on a Wrought Ti-6Al-4V Plate by Electron Beam Melting

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Abstract

The direct building of a Ti-6Al-4V impeller part onto a wrought Ti-6Al-4V plate using electron beam melting (EBM) has been reported for the first time in this study. From the results of the defect analysis, hardness measurement, microstructural observation, and tensile test of the as-built specimens, it is revealed that the complex geometrical component can be successfully fabricated, and the finished component has a combination of wrought base plate and EBM-built section. The fusion zone is about 150 μm thick and no defect is observed along the fusion zone. Tensile results also reflect a good fusion between the wrought and EBM-built sections.

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Acknowledgements

The work was financially supported by A*STAR Industrial Additive Manufacturing Program: Work Package 3 (Electron Beam Melting, Grant No. 1325504103) and the A*STAR Additive Manufacturing Centre (AMC) Initiative: Work Package 1 (High Temperature Materials Development for 3D Additive Manufacturing, Grant No. 1426800088).

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Authors and Affiliations

  1. Singapore Institute of Manufacturing Technology, 73 Nanyang Drive, Singapore, 637662, Singapore

    Pan Wang, Mui Ling Sharon Nai, Shenglu Lu, Jiaming Bai, Baicheng Zhang & Jun Wei

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  1. Pan Wang
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  2. Mui Ling Sharon Nai
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  3. Shenglu Lu
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  4. Jiaming Bai
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  5. Baicheng Zhang
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  6. Jun Wei
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Correspondence to Pan Wang, Mui Ling Sharon Nai or Jun Wei.

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Wang, P., Nai, M.L.S., Lu, S. et al. Study of Direct Fabrication of a Ti-6Al-4V Impeller on a Wrought Ti-6Al-4V Plate by Electron Beam Melting. JOM 69, 2738–2744 (2017). https://doi.org/10.1007/s11837-017-2610-5

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  • DOI: https://doi.org/10.1007/s11837-017-2610-5

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