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Laser processing of titanium aluminides

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Abstract

Using a Nd-YAG laser, laser processing of a series of Ti-Al alloys including pure Ti and Ti-Al intermetallic compounds has been studied. Scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), and optical microscopy were used to determine the surface morphological, chemical, and compositional characteristics of the laser-processed samples. Analysis of results showed that cracks along grain boundaries caused by rapid heating and cooling of laser processing were the dominant characteristics of the surface morphologies of the laser-processed samples. The Al content in the Ti-Al alloys played a very important role in crack initiation and/or development. The more Al content in the samples, the more severe the cracks that developed after laser processing under the same conditions. The experiments were conducted at ambient conditions, resulting in surface oxidation layers being observed on the processed samples. The XPS results indicated that the oxidation layer consisted of adsorbed O2, Al2O3, TiO2, and TiO. In addition, Al enrichment was found in the oxide film of TiAl as well as in the oxidation layers formed on the surfaces of TiAl and Ti3Al intermetallics that were processed by the laser; this differs from the reported results for traditional oxidation of TiAl at elevated temperature.

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References

  1. M. Yamaguchi: in Titanium ’92-Science and Technology, F.H. Froes and I. Caplan, eds., TMS, Warrendale, PA, 1993, p. 959.

    Google Scholar 

  2. W. Thompson and W. Chu: in Microstructure/Property Relationships in Titanium Aluminides and Alloys, Y.-W. Kim and R.R. Boyer, eds., TMS, Warrendale, PA, 1991, p. 165.

    Google Scholar 

  3. P.S. Liu, K.H. Hou, W.A. Baeslack III, and J. Hurley: in Titanium ’92-Science and Technology, F.H. Froes and I. Caplan, eds., TMS, Warrendale, PA, 1993, p. 1477.

    Google Scholar 

  4. S.G. Kumar, R.G. Reddy, and L. Brewer: J. Phase Equilibria, 1994, vol. 15 (3), pp. 279–84.

    Article  CAS  Google Scholar 

  5. S.G. Kumar, R.G. Reddy, J. Wu, and J. Holthus: J. Mater. Eng. Performance, 1995, vol. 4, pp. 63–69.

    Article  CAS  Google Scholar 

  6. S.G. Kumar and R.G. Reddy: Proc. Int. Symp. on Synthesis/Processing of Lightweight Metallic Materials, TMS, Warrendale, PA, 1995, pp. 129–39.

    Google Scholar 

  7. S.G. Kumar and R.G. Reddy: Metall. Mater. Trans. A, 1996, vol. 27A, pp. 1121–26.

    Article  CAS  Google Scholar 

  8. J. Mazumder: in Laser Materials Processing, M. Bass, ed., North-Holland Publishing Company, Amsterdam, Netherlands, 1983, p. 112.

    Google Scholar 

  9. W.M. Steen and J.N. Kamalu in Laser Materials Processing, M. Bass, ed., North-Holland Publishing Company, Amsterdam, Netherlands, 1983, p. 15.

    Chapter  Google Scholar 

  10. M Querry: in High Power Lasers, A. Niku-Lari and B.L. Mordike, eds., Pergamon Press, Elmsford, NY, 1989, p. 195.

    Chapter  Google Scholar 

  11. J.C. Beitialarrangoitia, G.E. Garcia de Vicuna, and S.K. Ghosh: in High Power Lasers, A. Niku-Lari and B.L. Mordike, eds., Pergamon Press, Elmsford, NY, 1989, p. 213.

    Chapter  Google Scholar 

  12. M.J. Hsu and P.A. Molian: J. Mater. Sci., 1994, vol. 29, p. 5607.

    Article  CAS  Google Scholar 

  13. K. Li and P. Sheng: in Manufacturing Science and Engineering-1995, E. Kannatey-Asibu, Jr., C.J. Li, Y. Rong, C.-Y. Shia, and F.J. Stango, eds., ASME, New York, NY, 1995, vol. 1, p.3.

    Google Scholar 

  14. S. Tsukamoto and O. Umezawa: Mater. Sci. Eng., 1997, vol. A223, p. 99.

    Article  CAS  Google Scholar 

  15. X. Wen and R.G. Reddy: Processing and Fabrication of Advanced Materials V, TMS, Warrendale, PA, 1996, pp. 37–389.

    Google Scholar 

  16. R.G. Reddy, X. Wen, and Y. Li: in Titanium Extraction and Processing, B. Mishra and G.J. Kipouros, eds., TMS, Warrendale, PA, 1997, pp. 153–61.

    Google Scholar 

  17. S. Huang and D.S. Shih: in Microstructure/Property Relationships in Titanium Aluminides and Alloys, Y.-W. Kim and R.R. Boyer, eds., TMS, Warrendale, PA, 1991, p. 105.

    Google Scholar 

  18. J.U. Ejiofer, G.F. Fernando, and R.G. Reddy: J. Mater. Sci., 1998, vol. 33, pp. 4029–33.

    Article  Google Scholar 

  19. C.I. Okafor and R.G. Reddy: JOM, 1999, vol. 47, pp. 35–39.

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, The University of Alabama, 35487, Tuscaloosa, AL

    Sherman McElroy, Dehua Yang & Ramana G. Reddy

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  1. Sherman McElroy
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  2. Dehua Yang
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  3. Ramana G. Reddy
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McElroy, S., Yang, D. & Reddy, R.G. Laser processing of titanium aluminides. J. of Materi Eng and Perform 9, 506–515 (2000). https://doi.org/10.1361/105994900770345629

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  • DOI: https://doi.org/10.1361/105994900770345629

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