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Mechanical properties of AM Ti6Al4V porous scaffolds with various cell structures

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A Correction to this article was published on 19 August 2019

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Abstract

Porous scaffolds as succedaneum of natural bone were investigated and applied in medical field. In this work, we carried out studies on mechanical properties of solid parts and porous scaffolds obtained by additive manufacturing (AM) technique. It is found that productions of AM process have a higher yield strength and higher microhardness compared to commercial Ti6Al4V. Roughened surface was observed for layer-by-layer process of AM and sticking of powder particles. The machining accuracy is affected by both dimensions and angles. Meanwhile, mechanical properties of porous scaffolds are influenced by machining accuracy and microdefects. In addition, the unit cell structures also impact the mechanical properties of porous scaffolds in terms of elastic modulus, yield strength and failure mode. Overall, considering the mechanical properties and biological properties, scaffolds with cube (CB) crystal cells are the best choice in our study.

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  • 19 August 2019

    In the original publication, incorrect version of Table 5 has been published.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51472089), the Fundamental Research Funds for the Central Universities (No. 2018KZ15), the Natural Science Foundation of Guangdong Province (No. 2018A030313803) and the Guangdong Science and Technology Project (No. 2017B090911008).

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Authors and Affiliations

  1. School of Materials Science and Engineering, South China University of Technology, Guangzhou International Campus, Guangzhou, 510006, China

    Hua-De Zheng, Li-Li Liu, Chun-Lin Deng & Cheng-Yun Ning

  2. National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China

    Hua-De Zheng, Chun-Lin Deng & Cheng-Yun Ning

  3. Key Laboratory of Biomedical Engineering of Guangdong Province, and Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China

    Hua-De Zheng, Chun-Lin Deng & Cheng-Yun Ning

  4. South China Institute of Collaborative Innovation, Dongguan, 523808, China

    Li-Li Liu

  5. Medical Devices Research and Testing Center, South China University of Technology, Guangzhou, 510006, China

    Zhi-Feng Shi

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  1. Hua-De Zheng
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Correspondence to Hua-De Zheng or Zhi-Feng Shi.

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Zheng, HD., Liu, LL., Deng, CL. et al. Mechanical properties of AM Ti6Al4V porous scaffolds with various cell structures. Rare Met. 38, 561–570 (2019). https://doi.org/10.1007/s12598-019-01231-4

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