Hostname: page-component-f554764f5-nqxm9 Total loading time: 0 Render date: 2025-04-11T00:17:15.032Z Has data issue: false hasContentIssue false
  • English
  • Français

Strength and Toughness of Be12Nb, Be17 Nb2 and Two-Phase Be12Nb-Be17Nb2

Published online by Cambridge University Press:  15 February 2011

Stephen M. Bruemmer ,
Bruce W. Arey  and
Charles H. Henager Jr.
Stephen M. Bruemmer
Affiliation:
Pacific Northwest Laboratory, Richland, WA
Bruce W. Arey
Affiliation:
Pacific Northwest Laboratory, Richland, WA
Charles H. Henager Jr.
Affiliation:
Pacific Northwest Laboratory, Richland, WA
Get access

Abstract

Bend strength, compression strength, and fracture toughness of niobium beryllide intermetallic compounds have been assessed at temperatures from ambient to 1200°C. Hot-isostatically-pressed (HIP) Be12Nb showed significantly improved lowand high-temperature mechanical properties over vacuum-hot-pressed (VHP) material. Strengths at 20°C were 250 MPa in bending and 2750 MPa in compression with a fracture toughness of ∼4 Mpa√m, much higher than previously measured for this compound. High-temperature (≥ 1000°C) mechanical properties were also improved with bend strengths of 250 MPa at 1200°C as compared to only 70 to 100 MPa for the VHP material. However, severe pest embrittlement was detected in the HIP material at temperatures between 650 and 1000°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 273: Symposium Q – Intermetallic Matrix Composites II , 1992 , 425
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Lewis, J.R., J. Metals, 13 (1961) 357 and 829.Google Scholar
2. 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, 1960, p. 297.Google Scholar
3. Stonehouse, A.J., Mater. Design Eng., Feb., (1962).Google Scholar
4. Aitken, E.A. and Smith, J.P., Properties of Beryllium Intermetallic Compounds, GEMP-105, General Electric Co., 1961.Google Scholar
5. Kendall, E.G., Intermetallic Materials - Carbides, Borides, Beryllides, Nitrides and Silicides, Chapter 5, Ceramic Advanced Technology, 1965, p. 143.Google Scholar
6. Kirby, R.F., PhD Dissertation, University of Arizona, 1969.Google Scholar
7. Bruemmer, S.M., Arey, B.W., Jacobson, R.E. and Henager, C.H. Jr., High-Temperature Ordered Intermetallic Alloys IV, Materials Research Society, Vol.213, 1991, p. 475.Google Scholar
8. Henager, C. H. Jr., Jacobson, R. E. and Bruemmer, S. M., Mat. Sci. Eng., in press.Google Scholar
9. Bruemmer, S.M., Chariot, L.A., Brimhall, J.L., Henager, C.H. Jr., and Hirth, J.P., Dislocation Structures in Be 12 Nb After High-Temperature Deformation, submitted for publication in Phil. Mag.Google Scholar
10. Bruemmer, S.M., Chariot, L.A., Brimhall, J.L., Henager, C.H. Jr., and Hirth, J.P., in preparation.Google Scholar
11. Whithey, P. A. and Bowen, P., Int. J. of Fracture, 46 (1990) 55–59.Google Scholar
12. Aitken, E.A. and Smith, J.P., J. Nucl. Mat., 6–1 (1962) 119.Google Scholar