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Microstructural investigation of a rapidly solidified Ti-6Al-4V-1B-0.5Y alloy

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Abstract

A Ti-6Al-4V-1B-0.5Y (wt%) alloy has been prepared by consolidation of the melt-spun alloy fibres. The microstructures of the melt-spun fibre and the consolidated alloy were examined by different techniques. It was found that in the consolidated alloy, titanium boride and yttrium oxide particles have a refined particle size and a uniform distribution in the α(+β) matrix compared with the microstructure of the same alloy obtained by conventional ingot metallurgy. The boride phase in the consolidated alloy mainly has a needle-shaped morphology and has been identified by electron diffraction to be orthorhombic TiB with a B27 structure, while the yttrium oxide has a cuboidal morphology and has been identified as bcc Y2O3. Detailed TEM examination also revealed that yttrium addition has a strong influence on the TiB morphology by comparing the microstructures of Ti-6Al-4V-1B alloys with and without yttrium addition. Under similar processing conditions, the TiB phase in the consolidated alloys without yttrium addition mainly has a nearly equiaxed morphology with a finer particle size, while the TiB phase in the consolidated alloy with yttrium addition will mainly have a needle-shaped morphology. This effect of yttrium addition on the TiB morphology has been discussed in terms of heterogeneous nucleation and the reduced undercooling.

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References

  1. A. G. Jackson, J. Moteff and H. F. Froes, in “Powder Metallurgy of Titanium Alloys”, edited by F. H. Froes and J. E. Smugeresky (TMS-AIME, Warrendale, PA, 1980) p. 303.

    Google Scholar 

  2. C. Suryanarayana and F. H. Froes, Int. Metall. Rev. 36 (1991) 85.

    Article  CAS  Google Scholar 

  3. J. L. Murray (ed.), “Phase Diagrams of Binary Titanium Alloys”, (ASM International, Metals Park, OH, 1987) p. 33.

    Google Scholar 

  4. S. H. Whang, J. Mater. Sci. 21 (1986) 2224.

    Article  CAS  Google Scholar 

  5. S. H. Whang and C. S. Shi, in “Rapidly Solidified Alloys and Their Mechanical and Magnetic Properties”, Materials Research Society Symposia Vol. 58, edited by B. C. Giessen, D. E. Polk and A. I. Taub (MRS, Boston, MA, 1986) p. 353.

    Google Scholar 

  6. B. B. Rath, B. A. MacDonald, S. M. L. Sastry, R. J. Lederich, J. E. O'Neal and C. R. Whitsett, in “Titanium '80: Science and Technology”, Vol. 2, edited by. H. Kimura and O. Izumi, (The Metallurgical Society AIME, Warrendale, PA, 1980). p 1185.

    Google Scholar 

  7. D. G. Konitzer, B. C. Muddle and H. L. Fraser, Metall. Trans. 14A (1983) 1979.

    Article  CAS  Google Scholar 

  8. Z. Fan, A. P. Miodownik, L. Chandrasekaran and M. Ward-Close, J. Mater. Sci. 29 (1994) 1127.

    Article  CAS  Google Scholar 

  9. R. G. Rowe, T. F. Broderick, E. F. Koch and F. H. Froes, in “Titanium-Rapid Solidification Technology”, edited by F. H. Froes and D. Eylon, (The Metallurgical Society AIME, Warrendale, PA, 1986) p. 131.

    Google Scholar 

  10. Z. Fan, PhD thesis, University of Surrey, Guildford, UK (1993).

    Google Scholar 

  11. E. E. Shpil'rain, D. N. Kagan, L. S. Barkhatov, L. I. Zhmakin and V. V. Koroleva, High Temp. High Press. 11 (1979) 539.

    CAS  Google Scholar 

  12. R. G. Fenish, NRM 138 (1964), PP.1–37.

    Google Scholar 

  13. O. N. Carlson, Bull. Alloy Phase Diagr. 11 (1990) 61.

    Article  CAS  Google Scholar 

  14. R. G. Rowe, E. F. Koch, T. F. Broderick and F. H. Froes, in “Rapidly Solidified Materials”, edited by P. W. Lee and R. S. Carbonara, (ASM, Metals Park OH, 1986) p. 107.

    Google Scholar 

  15. Y. Z. Lu and B. C. Giessen, Mater. Sci. Eng. 98 (1988) 179.

    Article  CAS  Google Scholar 

  16. T. Kainuma and Y. Kawabe, in “Proceedings of the 6th World Conference on Titanium”, Part II, edited by P. Lacombe, R. Tricot and G. Beranger (Les Editions de Physique, Les Ulis Cedex, France, 1989) p. 849.

    Google Scholar 

  17. Y. T. Lee, G. Wirth, T. F. Broderick and F. H. Froes, ibid.“, p. 837

    Google Scholar 

  18. B. F. Decker and J. S. Kasper, Acta Crystalogr. 7 (1954) 77.

    Article  CAS  Google Scholar 

  19. M. E. Hyman, C. McCullough, J. J. Vallencia, C. G. Levi and R. Mehrabian, Metall. Trans. 20A (1989) 1847.

    Article  CAS  Google Scholar 

  20. Y. Z. Lu, B. C. Giessen and S. H. Whang, in “Rapidly Solidified Alloys and Their Mechanical and Magnetic Properties”, Materials Research Society Symposia, Vol. 58, edited by B. C. Giessen, D. E. Polk and A. I. Taub (MRS, Boston, MA 1986) p. 377.

    Google Scholar 

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Authors and Affiliations

  1. Department of Materials, University of Oxford, Parks Road, OX1 3PH, Oxford, UK

    Z. Fan

  2. Department of Materials Science and Engineering, University of Surrey, GU2 5XH, Guildford, Surrey, UK

    A. P. Miodownik

  3. Materials and Structures Department, Defence Research Agency, GU14 6TD, Farnborough, Hants, UK

    L. Chandrasekaran & C. M. Ward-Close

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  1. Z. Fan
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  2. A. P. Miodownik
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  3. L. Chandrasekaran
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  4. C. M. Ward-Close
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Fan, Z., Miodownik, A.P., Chandrasekaran, L. et al. Microstructural investigation of a rapidly solidified Ti-6Al-4V-1B-0.5Y alloy. JOURNAL OF MATERIALS SCIENCE 30, 1653–1660 (1995). https://doi.org/10.1007/BF00351593

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