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Laser Additive Manufacturing of High-Performance Materials pp 73–113Cite as

Novel Ti-Based Nanocomposites by Selective Laser Melting (SLM) Additive Manufacturing (AM): Tailored Nanostructure and Performance

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Abstract

Selective laser melting (SLM) additive manufacturing (AM) process was used to produce nanocrystalline TiC-reinforced Ti matrix bulk-form nanocomposites. The influences of laser energy density on densification activity, microstructural feature, nanohardness, and wear behavior of SLM-processed parts were comprehensibly studied to improve the controllability SLM process of nanomaterials. The TiC reinforcement in SLM-processed nanocomposites typically had a unique nanoscale lamellar structure, which was distinctly different from the initial particulate morphology before SLM. Reasonable physical mechanisms and conditions for the formation of TiC nanostructure reinforcing phase during SLM process were proposed. The microstructural and mechanical properties of SLM-processed TiC/Ti nanocomposite parts were sensitive to the preparation method of the starting nanocomposite powder and the content of TiC nanoparticles. The optimally processed TiC/Ti nanocomposite parts by SLM demonstrated the significantly elevated microhardness and wear performance as relative to the unreinforced Ti parts.

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Authors and Affiliations

  1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China

    Prof. Dr. Dongdong Gu

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  1. Prof. Dr. Dongdong Gu
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Correspondence to Dongdong Gu .

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Gu, D. (2015). Novel Ti-Based Nanocomposites by Selective Laser Melting (SLM) Additive Manufacturing (AM): Tailored Nanostructure and Performance. In: Laser Additive Manufacturing of High-Performance Materials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46089-4_3

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  • DOI: https://doi.org/10.1007/978-3-662-46089-4_3

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-46088-7

  • Online ISBN: 978-3-662-46089-4

  • eBook Packages: EngineeringEngineering (R0)

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