High Temperature Oxidation of Ti45.4Al4.8Nb and Ti46Al2Mo2Nb Alloys

J.W. Kim; Dong Bok Lee

doi:10.4028/www.scientific.net/MSF.475-479.801

Paper Titles

Advances in Ambient Temperature Creep Deformation Behavior of Two-Phase Titanium Alloys
p.779

Microstructure and Tensile Properties of Hot Worked High Nb Containing TiAl Alloy on Industrial Scale
p.785

Selection of Can and Insulating Materials for Controlled-Dwell Extrusion of Gamma-TiAl
p.789

Recent Work on Alloy and Process Development of Ti₂AlNb Based Alloys
p.795

High Temperature Oxidation of Ti45.4Al4.8Nb and Ti46Al2Mo2Nb Alloys
p.801

Investigation on a Fabrication Technique of TiAl Sheet
p.805

Skull Variation during the Induction Skull Melting Processing of γ-TiAl Alloy
p.809

Finite Element Simulation of Canned Forging on TiAl Alloy Containing High Nb
p.813

Effects of Cooling Rate on the Microstructure and Room Temperature Tensile Properties of Orthorhombic Ti-22Al-21Nb-1Ta-1W Alloy
p.817

HomeMaterials Science ForumMaterials Science Forum Vols. 475-479High Temperature Oxidation of Ti45.4Al4.8Nb and...

High Temperature Oxidation of Ti45.4Al4.8Nb and Ti46Al2Mo2Nb Alloys

Abstract:

The Ti46Al2Nb2Mo and Ti45.4Al4.8Nb alloys were oxidized isothermally and cyclically in air between 800 and 1000oC, and their oxidation characteristics were investigated. Nb and Mo were beneficial to oxidation resistance. The initially formed thin TiO2-rich scale changed to an outer, superficial TiO2 layer, a thick Al2O3-rich middle layer, and an inner (TiO2-rich, Al2O3-deficient) layer, as the extent of oxidation progressed. The dissolved ions of Mo and Nb had a tendency to be expelled from the outer TiO2 layer, which was formed by the outward diffusion of Ti ions, to the inner (TiO2-rich, Al2O3-deficient) layer, which was formed by the inward transport of oxygen, owing to the nobility of Mo and Nb when compared to Ti and Al.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

801-804

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.801

Citation:

Cite this paper

Online since:

January 2005

Authors:

J.W. Kim, Dong Bok Lee

Keywords:

Intermetallic, Molybdenum, Niobium, Oxidation, TiAl

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Y. D. Jang, D. B. Lee and D. Y. Seo, Met. Mater. -Int. 8, 503 (2002).

Google Scholar

[2] M. Maki, M. Shioda, M. Sayashi, T. Shimizu and S. Isobe, Mater. Sci. Eng., A153, 591 (1992).

Google Scholar

[3] V. A. C. Haanappel, H. Clemens and M. F. Stroosnijder, Intermetallics 10, 293 (2002).

Google Scholar

[4] B. G. Kim, G. M. Kim and C. J. Kim, Scripta Metall. Mater. 33, 1117 (1995).

Google Scholar

[5] Y. Shida and H. Anada, Mater. Trans. JIM 35, 623 (1994).

Google Scholar

[6] U. Hornauer, E. Richter, W. Matz, H. Reuther, A. Mucklich, E. Wieser, W. Moller, G. Schumacher, and M. Schutze, Surf. Coat. Tech. 128/129, 418 (2000).

Google Scholar

[7] S. Taniguchi, K. Uesaki, Y. C. Zhu, Y. Matsumoto and T. Shibata, Mater. Sci. Eng. A266, 267 (1999).

Google Scholar

[8] M. Yoshihara and Y. W. Kim, Gamma Titanium Aluminides, p.753, TMS, Warrendale, PA (1999).

Google Scholar

[9] S. A. Kekare, and P. B. Asawath, Mater. Sci. Eng. A32, 2485 (1997).

Google Scholar

[10] V. A. C. Haanappel, J. D. Sunderkotter and M. F. Stroosnijder, Intermetallics 7, 529 (1999).

Google Scholar