Metallurgical and Materials Transactions A

, Volume 39, Issue 5, pp 1196–1205 | Cite as

Microstructure and Properties of Laser-Deposited Ti6Al4V Metal Matrix Composites Using Ni-Coated Powder

  • B. ZhengEmail author
  • J.E. Smugeresky
  • Y. Zhou
  • D. Baker
  • E.J. Lavernia


As a layer additive rapid manufacturing process, laser engineered net shaping (LENS) can fabricate three-dimensional components directly from a computer-aided design (CAD) model. In this work, the LENS process was employed to fabricate Ti6Al4V metal matrix composites using powder mixtures of gas-atomized Ti6Al4V powder and varying volume fractions of Ni nanocoated TiC particles. The as-fabricated microstructures were studied using scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), differential thermal analyzer (DTA), and transmission electron microscopy (TEM) techniques. The interfaces between the metal matrix and ceramic particles were examined. The presence of intermetallic phases and resolidified TiC particles was rationalized on the basis of the thermal field during deposition. The influence of LENS parameters on the microstructure evolution and mechanical behavior of the metal matrix composites (MMCs) was also discussed.


Ceramic Particle Ti6Al4V Alloy Compressive Yield Strength Ti6Al4V Powder Melt Pool Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported under NASA Marshall Contract No. NNM06AB11C. We acknowledge the assistance of Mr. Ken Cooper, Aries Work Package Manager, and Mr. Curtis Manning, Rapid Prototyping Manager, of the NASA Net Shape/Rapid Prototype Manufacturing Center for their direction and support of this work. Work at Sandia National Laboratories is supported by the U.S. Department of Energy (Contract No. DE-AC04-94AL85000).


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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2008

Authors and Affiliations

  • B. Zheng
    • 1
    Email author
  • J.E. Smugeresky
    • 2
  • Y. Zhou
    • 1
  • D. Baker
    • 3
  • E.J. Lavernia
    • 1
  1. 1.Department of Chemical Engineering and Materials ScienceUniversity of CaliforniaDavisUSA
  2. 2.Sandia National LaboratoriesLivermoreUSA
  3. 3.Advanced Powder Solutions, IncHoustonUSA

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