Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-27T18:48:35.618Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Temperature on the Mechanical Properties and Microstructures of In Situ Formed Cu-Nb and Cu-Ta Composites

Published online by Cambridge University Press:  22 February 2011

W. A. Spitzig ,
P. D. Krotz ,
L. S. Chumbley ,
H. L. Downing  and
J. D. Verhoeven
W. A. Spitzig
Affiliation:
Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011
P. D. Krotz
Affiliation:
Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011
L. S. Chumbley
Affiliation:
Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011
H. L. Downing
Affiliation:
Drake University, Des Moines, IA 50311
J. D. Verhoeven
Affiliation:
Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011
Get access

Abstract

The effect of temperature on the mechanical properties and microstructures has been evaluated for heavily cold drawn Cu-20% Nb and Cu-20% Ta composites. The strengths of the composites decrease with increasing temperature, with the decrease becoming most pronounced at temperatures above about 300°C and at larger draw ratios. Cu-20% Ta composites are stronger than Cu-20% Nb composites throughout the temperature range studied (22–600°C) with the improvement increasing with increasing temperature. Resistivity measurements and substructure analyses showed that at temperatures where softening accelerated, resistivity decreased indicating a substructural change which was observed to be coarsening of the Nb and Ta filaments in the composites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 120: Symposium G – High-Temperature/High-Performance Composites , 1988 , 45
Copyright
Copyright © Materials Research Society 1988

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.)

References

1. Frommeyer, G. and Wassermann, G., Acta Met. 23, 1353 (1975).CrossRefGoogle Scholar
2. Bevk, J., Sunder, W. A., Dublon, G., and Cohen, E., in In Situ Composites IV, edited by Lemkey, F. D., Cline, H. E., and M., McLean (Elsevier Science Publishers, New York, 1982), p. 121.Google Scholar
3. Funkenbusch, P. D. and Courtney, T. E., Acta Met. 33, 913 (1985).CrossRefGoogle Scholar
4. Pelton, A. R., Laabs, F. C., Spitzig, W. A., and Cheng, C. C., Ultramicroscopy 22, 251 (1987).CrossRefGoogle Scholar
5. Spitzig, W. A., Pelton, A. R., and Laabs, F. C., Acta Met. 35, 2427 (1987).CrossRefGoogle Scholar
6. Spitzig, W. A. and Krotz, P. D., Scripta Met. 21, 1143 (1987).CrossRefGoogle Scholar
7. Karasek, K. R. and Bevk, J., Scripta Met. 13, 259 (1979).CrossRefGoogle Scholar
8. Bevk, J. and Karasek, K. R., in New Developments and Applications in Composites, edited by Kuhlmann-Wilsdorf, D. and Harrigan, W. C. Jr. (AIME, Warrendale, PA, 1979), p. 101.Google Scholar
9. Spitzig, W. A. and Krotz, P. D., to be published in Acta Met.Google Scholar
10. Verhoeven, J. D., Schmidt, F. A., Gibson, E. D., and Spitzig, W. A., J. Metals 38, (9), 20 (1986).Google Scholar
11. Underwood, E. E., Quantitative Stereology (Addison-Wesley, Reading, MA, 1970), p. 80.Google Scholar
12. Karasek, K. R. and Bevk, J., J. Appl. Phys. 52, 1370 (1981); Scripta Met. 14, 431 (1980).CrossRefGoogle Scholar
13. Wawra, H. H., Metall. 32, 346 (1978).Google Scholar
14. Cronin, J. J., Met. Eng. Quart. 16, 1 (1976).Google Scholar
15. Courtney, T. H., in New Developments and Applications in Composites, edited by Kuhlmann-Wilsdorf, D. and Harrigan, W. C. Jr. (AIME, Warrendale, PA, 1979), p. 1.Google Scholar