Journal of Surface Science and Engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지

High Temperature Oxidation of Ti-43%Al-2%W-0.1%Si Alloys

Ti-43%Al-2%W-0.1%Si 합금의 고온산화

  • 심웅식 (성균관대학교 금속재료공학부) ;
  • 이동복 (성균관대학교 금속재료공학부)
  • Published : 2003.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

Alloys of Ti-43%Al-2%W-0.1%Si were oxidized isothermally and cyclically between $900^{\circ}C$ and$ 1050^{\circ}C$, and their oxidation characteristics were studied. During isothermal tests, the alloys oxidized slowly up to 100$0^{\circ}C$, but fast at $1050^{\circ}C$. Though the scale adherence was not good above $900^{\circ}C$, the alloys displayed better oxidation behavior than unalloyed TiAl alloys. The oxide scales consisted primarily of an outer $TiO_2$ layer, intermediate $Al_2$$O_3$-rich layer, and an inner mixed layer of (TiO$_2$ $+Al_2$$O_3$). Tungsten was present mainly at the lower part of the oxide scale, while Si over the whole oxide scale.

Keywords

References

  1. Y. W. Kim, J. Met., 41 (7) (1989) 24
  2. Y. W. Kim, J. Met, 46(7) (1994) 30
  3. W. M. Yin, V. Lupinc, L. Battezzati, Mater.Sci. Eng., A239-240 (1997) 713
  4. V. Lupinc, M. Marchionni, G. Onofrio,Gamma Titanium Aluminides, Y. W. Kim etal.,(ed.), TMS, Warrendale, PA, (1999) 349
  5. I. Gil, M. A. Munoz-Morris, D. G. Morris,Intermetallics, 9 (2001) 373 https://doi.org/10.1016/S0966-9795(01)00014-0
  6. A. Tomasi, C. Noseda, M. Nazmy, S. Gialanella, MRS Symp. Proc., 460 (1997) 225
  7. A. Tomasi, S. Gialanella, P. G. Orsini, M. Nazmy, MRS Symp. Proc., 364 (1995) 999
  8. D. B. Lee, K. B. Park, M. Nakamura, Met. Mater. Int., 8 (2002) 319 https://doi.org/10.1007/BF03186102
  9. M. W. Brumm, H. J. Grabke, Corro. Sci, 33(1992) 1677 https://doi.org/10.1016/0010-938X(92)90002-K
  10. P. Kofstad, High Temperature Oxidation Metals, Wiley, NY, (1966) 175
  11. Y. Murata, M. Morinaga, Y. Shimamura, Y.Takada, S. Miyazaki, Structural Intermetallics, R. Darolia, et al., (ed.),TMS, Warrendale,PA, (1993) 247
  12. S. A. Kekare, J. B. Toney, P. B. Aswath, Metall. Mater. Trans.,A 26, (1995) 1835 https://doi.org/10.1007/BF02670771
  13. G. Welsch, A. I. Kahveci, Oxidation of High-Temperature Intermetallics, T. Grobstein etal., (ed.), TMS, Warrendale, PA, (1989) 207
  14. M. P. Brady, W. J. Bnndley, J. L. Smialek, I.E. Locci, J. Met, 48(11), (1996) 46
  15. Y. Shida, H. Anada, Corros. Sci, 35 (1993)945
  16. H. Anada, Y. Shida, J. Jpn Inst. Met., 58(1994) 1036 https://doi.org/10.2320/jinstmet1952.58.9_1036
  17. Y. Shida, H. Anada, Mater. Trans. JIM, 35(1994) 623 https://doi.org/10.2320/matertrans1989.35.623
  18. Y. Shida, H. Anada, Oxid. Met., 45 (1996)197 https://doi.org/10.1007/BF01046826
  19. K. Kasahara, K. Hashimoto, H. Doi, T. Tsujimoto, J. Jpn Inst. Met., 54 (1990) 948 https://doi.org/10.2320/jinstmet1952.54.8_948