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Properties and Potential of High-Temperature Niobium Beryllides

Published online by Cambridge University Press:  01 January 1992

S. M. Bruemmer ,
J. L. Brimhall ,
C. H. Henager Jr.  and
J. P. Hirth
S. M. Bruemmer
Affiliation:
Pacific Northwest Laboratory, Richland, WA 99352
J. L. Brimhall
Affiliation:
Pacific Northwest Laboratory, Richland, WA 99352
C. H. Henager Jr.
Affiliation:
Pacific Northwest Laboratory, Richland, WA 99352
J. P. Hirth
Affiliation:
Washington State University, Pullman, WA 99164
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Abstract

Recent research on the low- and high-temperature properties of two beryllium-niobium intermetallic compounds, Be12Nb and Be17Nb2, is reviewed and discussed. Strength (bend and compression), hardness and fracture toughness has been mapped as a function of test temperature up to 1200°C. Results for hot-isostatically-pressed Be12Nb and Be17Nb2 are highlighted illustrating the potential for reasonable strength at both low and high temperatures. Chemical compatibility between Be12Nb and several high-temperature materials such as SiC, Al2O3, MoSi 2and various refractory metals is evaluated. Limitations for the structural use of the beryllides are identified and discussed including low-temperature toughness, intermediate-temperature embrittlement, high-temperature creep strength and composite compatibility.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 799
Copyright
Copyright © Materials Research Society 1995

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