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Fabrication of carbide-particle-reinforced titanium aluminide-matrix composites by laser-engineered net shaping

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Abstract

TiAl-based titanium aluminide alloys and their composites reinforced with ceramic particles are considered to be important candidate materials for high-temperature structural applications. Laser-engineered net shaping (LENS) is a layered manufacturing process, which involves laser processing fine powders into three-dimensional components directly from a computer-aided design (CAD) model. In this work, the LENS process was employed to fabricate carbide-particle-reinforced titanium aluminide-matrix composites using Tic and gas-atomized Ti−48Al−2Cr−2Nb powders as the feedstock materials. The composites deposited by the LENS process were susceptible to solid-state cracking due to high thermal stresses. The microstructures of the laser-deposited monolithic and composite titanium aluminide materials were characterized using light optical microscopy (LOM), scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS) analysis, electron-probe microanalysis (EPMA), and X-ray diffraction (XRD) techniques. Effects of the LENS processing parameters on the cracking susceptibility and microstructure were studied. Crack-free deposits were fabricated by preheating the substrate to 450 °C to 500 °C during LENS processing. The fabricated composite deposits exhibit a hardness of more than twice the value of the Ti−6Al−4V alloy.

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References

  1. Gamma Titanium Aluminide 1999, Y.W. Kim, D.M. Dimiduk, and M.H. Loretto, eds., TMS, Warrendale, PA, 1999, pp. 3–46.

    Google Scholar 

  2. S. Djanarthany, J.C. Viala, and J. Bouix: Mater. Chem. Phys., 2001, vol. 72, pp. 301–19.

    Article  CAS  Google Scholar 

  3. C.M. Ward-Close, R. Minor, and P.J. Doorbar: Intermetallics, 1996, vol. 4, pp. 217–29.

    Article  Google Scholar 

  4. P.C. Brennan, W.H. Kao, and J.M. Yang: Mater. Sci. Eng. A, 1992, vol. 153, pp. 635–40.

    Article  Google Scholar 

  5. G.K. Lewis and E. Schlienger: Mater. Design., 2000, vol. 21, pp. 417–23.

    Article  CAS  Google Scholar 

  6. P.A. Kobryn, E.H. Moore, and S.L. Semiatin: Scripta Mater., 2000, vol. 43, pp. 299–305.

    Article  CAS  Google Scholar 

  7. M.L. Griffith, L.D. Harwell, J.A. Romero, E. Schlienger, C.L. Atwood, and J.E. Smugeresky: Proc. 8th Solid Freeform Fabrication Symp., University of Texas, Austin, TX, 1997, pp. 387–92.

    Google Scholar 

  8. W. Hofmeister, M. Griffith, M. Ensz, and J. Smugeresky: JOM, 2001, vol. 53 (9), pp. 30–34.

    Article  CAS  Google Scholar 

  9. X.D. Zhang, C. Brice, D.W. Mahaffey, H. Zhang, K. Schwendner, D.J. Evans, and H.L. Fraser: Scripta Mater., 2001, vol. 44, pp. 2419–24.

    Article  CAS  Google Scholar 

  10. D. Srivastava, I.T.H. Chang, and M.H. Loretto: Intermetallics, 2001, vol. 9, pp. 1003–13.

    Article  CAS  Google Scholar 

  11. A. Denquin and S. Naka: Acta Mater., 1996, vol. 44, pp. 353–65.

    Article  Google Scholar 

  12. Q. Xia, J.N. Wang, J. Yang, and Y. Wang: Intermetallics, 2001, vol. 9, pp. 361–67.

    Article  CAS  Google Scholar 

  13. G. Cam, H. Flower, and D. West: Mater. Sci. Technol., 1991, vol. 7, pp. 505–11.

    CAS  Google Scholar 

  14. Handbook of Ternary Alloy Phase Diagrams (Vol. 3), P. Villars, A. Prince, and H. Okamoto, eds., ASM INTERNATIONAL, Materials Park, OH, 1995, p. 2908.

    Google Scholar 

  15. F. Perdrix, M. Trichet, J. Bonnentien, M. Cornet, and J. Bigot: Intermetallics 2001, vol. 9, pp. 807–15.

    Article  CAS  Google Scholar 

  16. S. Kou: Welding Metallurgy, John Wiley & Sons, Inc., New York, NY, 1987, p. 46.

    Google Scholar 

  17. R.A. Patterson, P.L. Martin, B.K. Damkroger, and L. Christodoulou: Welding J., 1990, vol. 69 (1), pp. 39s-44s.

    Google Scholar 

  18. R. Ramaseshan, A. Kakitsuji, S.K. Seshadri, N.G. Nair, H. Mabuchi, H. Tsuda, T. Matsui, and K. Morii: Intermetallics, 1999, vol. 7, pp. 571–77.

    Article  CAS  Google Scholar 

  19. B. Mei and Y. Miyamoto: Mater. Chem. Phys., 2002, vol. 75, pp. 291–95.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Lehigh University, 18015, Bethlehem, PA

    Weiping Liu (Visiting Scientist) & J. N. DuPont (Associate Professor)

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  1. Weiping Liu
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  2. J. N. DuPont
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Liu, W., DuPont, J.N. Fabrication of carbide-particle-reinforced titanium aluminide-matrix composites by laser-engineered net shaping. Metall Mater Trans A 35, 1133–1140 (2004). https://doi.org/10.1007/s11661-004-1016-5

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  • DOI: https://doi.org/10.1007/s11661-004-1016-5

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