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Anisotropic Study of Ti6Al4V Alloy Formed by Selective Laser Melting

  • Advanced Casting and Melt Processing Technology for Light Alloys
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Abstract

Selective laser melting (SLM) is a manufacturing technology that involves melting metal powder beds. Due to the temperature gradient during the course of forming, anisotropy is further caused by oriented grain growth. However, the influence of process parameters on anisotropy has not been studied. Two types of parameter scanning strategies and rotation angle increments were selected to alter the growth tendency of grains, thus affecting anisotropy. Comparing the STRIPES scanning strategy and the CHESS strategy, the latter can restrain anisotropy, while in the former, the anisotropy of tensile stress is influenced by the layer angle increment. The maximum tensile strength of SLM-formed parts in the formed direction deviates from an angle of 60° (1235 MPa and elongation of 5.3%), and the maximum microhardness property appears at the formed direction surface, namely, the top side surface (487 HV).

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Data availability

The data that support the findings in this paper are available from the corresponding authors upon reasonable request.

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Acknowledgements

This work was supported by the Fujian Insdustry-University Cooperation Project (Grant No. 2020 H6018) and Fujian Innovation Center of Additive Manufacturing (Grant No. ZCZZ20-04).

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Authors and Affiliations

  1. Academy of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, China

    Weidong Huang, Xiayu Chen, Xu Huang, Hui Wang & Yitao Zhu

  2. Advanced Manufacturing Productivity Promotion Center of Fujian province, Fuzhou, 350118, China

    Weidong Huang, Xu Huang & Hui Wang

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  1. Weidong Huang
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  2. Xiayu Chen
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  3. Xu Huang
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  4. Hui Wang
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Correspondence to Xu Huang.

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Huang, W., Chen, X., Huang, X. et al. Anisotropic Study of Ti6Al4V Alloy Formed by Selective Laser Melting. JOM 73, 3804–3811 (2021). https://doi.org/10.1007/s11837-021-04765-0

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  • DOI: https://doi.org/10.1007/s11837-021-04765-0

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