Skip to main content Accessibility help

Control of Interfacial Mechanical Properties in Ti/Al203 Composites

  • Hsin-Fu Wang (a1), William W. Gerberich (a1), Jim E. Angelo (a2) and Mike J. Mills (a2)


The fracture energy of Ti/Al203 composite interfaces has been determined by four point bending tests of sandwich specimens for different thicknesses of metal interlayers at 900°C. The interfacial fracture was found to be brittle. An intermetallic reaction product (Ti3Al) was produced at the interface after the diffusion bonding process. When the metal interlayer is thicker, there is more plastic energy dissipation in the metal during the fracture process. Therefore, the interfacial fracture energy increases. This can be seen from the fact that there is a larger plastic zone size with increasing thickness of the metal interlayer. The measured interfacial fracture energy Ti/Al203 ranges from 9.6 J/m2to 45.1 J/m2. The intrinsic interfacial fracture energy is obtained to be 0.26 J/m2. The embrittlement of the interface after the diffusion bonding process causes this value to be smaller than work of adhesion for Ti/Al203 (2.0 J/m2).



Hide All
1 Evans, A.G., Ruhle, M., Dalgleish, B.J. and Charalambides, P.G., Mater. Sci. Eng., A126, 53 (1991).
2 Reimanis, I.E., Dalglish, B.J., Braby, M., Ruhle, M. and Evans, A.G., Acta. Metall. Mater., 38, 2645 (1990).
3 Varias, A.G., Suo, Z. and Shih, C.F., J. Mech. Phys. Solids, 39, 963 (1991).
4 Dalgleish, B.J., Trumble, K. P. and Evans, A.G., Acta. Metall. Mater., 37, 1923 (1989).
5 Evans, A.G. and Dalgleish, B.J., Acta. Metall. Mater., 40, Suppl., S295 (1992).
6 Charalambides, P.G., Lund, J., Evans, A.G. and McMeeking, R.M., J. Appl. Mech., 56, 77 (1989).
7 Charalambides, P.G., Cao, H.C., Lund, J. and Evans, A.G., Mech. Mater., 8, 269 (1990).
8 Wang, H.F., Skowronek, C.J. and Gerberich, W.W., Acta. Metall. Mater. 41, 2425 (1993).
9 Peden, C.H.F., Kidd, K.B. and Shinn, N.D., J. Vac. Sci. Technol., A9, 1518 (1991).
10 Shih, CF., Asaro, R.J. and O’Dowd, N.P., J. Appl.Mech. 58, 450 (1991).
11 Venkataraman, S.K., Nelson, J.C., Hsieh, A. J., Kohlstedt, D.L. and Gerberich, W.W., submitted to J. of Adhesion Sci. Technol.


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