Skip to main content Accessibility help
×
Home

Temperature Effects on the Strength and Toughness of Be12Nb

  • Stephen M. Bruemmer (a1), Bruce W. Arey (a1), Rodney E. Jacobson (a2) and Charles H. Henager (a1)

Abstract

Strength and toughness of single-phase Be12Nb have been assessed at temperatures from ambient to 1200°C using four-point-bend and hardness tests. Vacuum-hot-pressed beryllide exhibits low bend strengths (∼110 MPa) and fracture toughnesses (∼2.5 MPa√m) at temperatures up to 500C. Measured bend strength then increases to a maximum at 1000°C, while KlC slowly increases through 1100 C. Significant plastic deformation is only observed at 1200 C for the test strain rate of 2×10−6/s. Hardness values were found to remain relatively constant at temperatures up to 800 C and then sharply decrease at higher temperatures. Results indicate that low toughness limits bend strength at temperatures below ∼1000 C and prompts the observed increase in strength at high temperatures.

Copyright

References

Hide All
1. Kendall, E.G., Intermetallic Materials - Carbides, Borides, Beryllides, Nitrides and Silicides, Chapter 5, Ceramic Advanced Technology, p. 143 (1965).
2. Lewis, J.R., J. Metals, 13, p. 357 and 829 (1961).
3. Stonehouse, A.J., Paine, R.M. and Beaver, W.W., Mechanical Properties of Some Transition Element Beryllides, Chapter 13, Mechanical Properties of Intermetallic Compounds, ed. Westbrook, J.H., John Wiley & Sons, NY, p.297 (1960).
4. Stonehouse, A.J., Mater. Design Eng., Feb., (1962).
5. Aitken, E.A. and Smith, J.P., Properties of Beryllium Intermetallic Compounds, GEMP-105, General Electric Co. (1961).
6. Kirby, R.F., PhD Dissertation, University of Arizona (1969).
7. Kronberg, M.L., Acta Metall., 9, 327 (1961).
8. Brown, W.F. and Srawley, J.E., Plane Strain Crack Toughness Testing of High- Strength Metallic Materials, ASTM STP 410, p. 13 (1967).
9. Anstis, G.R., Chantikul, P., Lawn, B.R., and Marshall, D.B., J. Am. Cer. Soc., 64, 533 (1981).
10. Fleischer, R.L. and Zabala, R.J., Metall. Trans., 12A, 1279 (1989).
11. Nieh, T.G. and Wadsworth, J., Scripta Metall., 24, 1489 (1990).
12. Charlot, L.A., Brimhall, J.L., Thomas, L.E., Bruemmer, S.M. and Hirth, J.P., Scripta Metall., in press, scheduled Jan. (1991).

Related content

Powered by UNSILO

Temperature Effects on the Strength and Toughness of Be12Nb

  • Stephen M. Bruemmer (a1), Bruce W. Arey (a1), Rodney E. Jacobson (a2) and Charles H. Henager (a1)

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.