Skip to main content Accessibility help
×
Home

TEM characterisation of fatigue tested lamellar Ti-44Al-8Nb-1B

  • H Jiang (a1), D Hu (a2) and I P Jones (a1)

Abstract

Detailed microstructural examination by TEM of fine-grained polycrystalline lamellar Ti-44Al-8Nb-1B after fatigue testing (R=0.1) at room temperature has been carried out. The operative slip systems were identified as 1/2<110> ordinary dislocations and 1/6<112> twinning. The results showed no strong relation between operative slip systems and macroscopic Schmid factor and it is believed the local stress conditions control the operation of the slip systems. Translamellar cracking was observed to be associated with fine transverse twins in the gamma lamellae.

Copyright

References

Hide All
1. Kim, Y.W. and Dimiduk, D.M., J. of Metals 43, 40 (1991)
2. Aswath, P.B. and Suresh, S., Mater. Sci. Eng. A114, L5 (1989)
3. Soboyejo, W.O., Deffeyes, J.E. and Aswath, P.B., Mater. Sci. Eng. A138, 95 (1991)
4. James, A.W. and Bowen, P., Mater. Sci. Eng. A153, 486 (1992)
5. Inui, H., Nakamura, A., Oh, M.H. and Yamaguchi, M., Acta Metal. Mater. 40, 3095 (1992)
6. Huang, Z.W. and Bowen, P., Acta Mater 47, 3189 (1999)
7. Sastry, S.M.L. and Lipsitt, H.A., Met Trans A, 8A, 299 (1977)
8. Gloanec, A.L., Hena, G., Jouiad, M., Bertheau, D., Belaygue, P., Grange, M., Scripta Met., 52, 107 (2005)
9. Umakoshi, Y., Yasuda, H.Y., Nakano, T., Materials Science and Engineering Al92/l93 511 (1995)
10. Nakano, T., Yasuda, H.Y., Higashitanakat, N. and Umakoshi, Y., Acta Mater. 45 4807 (1997)
11. Inui, Yashida, Yamaguchi, , Phil Mag (1998)
12. Li, X.Y., Wu, X., unpublished work

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed