Skip to main content Accessibility help
×
Home

The Role of Boron in the Mechanical Milling of Titanium-6 %Aluminium-4% Vanadium Powders

  • A.P. Brown (a1), R. Brydson (a1), C. Hammond (a1), T.M.T. Godfrey (a2) and A. Wisbey (a2)...

Abstract

The reduction in grain size of a metal can lead to significant improvement in mechanical properties. Mechanical alloying (MA) with a second phase is a possible route to producing fine-grained, particulate reinforced material. This study describes the microstructural development of Ti-6%Al-4%V milled with increasing concentrations of boron. Mechanical milling of Ti-6%Al-4%V powder produces a nanocrystalline material. MA of Ti-6%Al-4%V with boron results in the alloying of the two to form either a boride or an amorphous phase when the local concentration of boron is ∼ 50 at.%. During milling, the boron tends to remain near to its original particle form and in these boron-rich regions TiB is formed. Beyond these regions small amounts of boron (a few at.%) mix with the titanium matrix and reduce further the grain size of the titanium. An increase in the global concentration of boron increases the volume fraction of boride produced.

Copyright

References

Hide All
[1] Inagaki, H., Zeitschrift fur Metallkunde, 86, 643, (1995).
[2] Murty, B.S. and Ranganathan, S., Int. Mat. Rev., 43 (3), 101, (1998).
[3] Brown, A.P., Brydson, R., Hammond, C., Godfrey, T.M.T. and Wisbey, A., Proceedings of EMAG 99, 10P, (1999).
[4] Brand, K., Suryanarayana, C., Kieback, B.F. and Froes, F.H., Mat. Sci. Forum, 225–227, 471, (1996).
[5] Murray, J.L. (ed.), Phase Diagrams of Binary Titanium Alloys, Metals Park, OH, ASM International, p.33, (1987).
[6] Graef, M. de, LiSfvander, J.P.A., McCullough, C. and Levi, C.G., Acta Metall. Mater., 40 (12), 3395, (1992).
[7] Dinsdale, A.T., CALPHAD, 15 (4), 317, (1991).
[8] Miedema, A.R., Châtel, P.F. de and Boer, F.R. de, Physica 100B, 128, (1980).
[9] Godfrey, T.M.T., Wisbey, A., Goodwin, P.S., Ward-Close, C.M., Brown, A., Brydson, R., and Hammond, C., Proceedings of 9th World Conference on Titanium, (1999).
[10] Itoh, G., Cheng, T.T., and Loretto, M.H., Mat Trans., JIM, 35 (8), 501, (1994).

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