Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-29T07:35:24.150Z Has data issue: false hasContentIssue false
  • English
  • Français

Strength and Toughness of Composite Materials Based on Nickel Aluminide Matrices

Published online by Cambridge University Press:  26 February 2011

J. D. Rigney ,
P. S. Khadkikar ,
J. J. Lewandowski  and
K. Vedula
J. D. Rigney
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve UniversityCleveland, OH 44106
P. S. Khadkikar
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve UniversityCleveland, OH 44106
J. J. Lewandowski
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve UniversityCleveland, OH 44106
K. Vedula
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve UniversityCleveland, OH 44106
Get access

Abstract

Several nickel aluminide matrix composites were prepared using vacuum hot pressing techniques. The matrix compositions, based on Ni3Al, Ni3Al+B and NiAl, were reinforced with 10 volume % TiB2 particles. Both smooth and notched bend tests were conducted at room temperature on the monolithic as well as the reinforced materials in order to determine the effects of TiB2 reinforcement on both the smooth bend and notched bend properties. TiB2 additions were shown to improve the smooth bend strengths regardless of the matrix composition while notched bend tests, conducted to provide estimates of fracture toughness, revealed somewhat lower values for the composites in comparison to the monolithic materials. Fractographic analyses and in-situ fracture observations of the composites revealed that preferential fracture in regions of clustered TiB2 particles may significantly affect the measured toughnesses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 603
Copyright
Copyright © Materials Research Society 1989

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

REFERENCES

1. Liu, C.T., White, C.L., and Horton, J.A., Acta Met., 33,213 (1985).Google Scholar
2. Hahn, K.H. and Vedula, K., Scripta Met, (in press).Google Scholar
3. Khadkikar, P.S., Lewandowski, J.J., Vedula, K., paper accepted for Met.Trans. (1988).Google Scholar
4. Khadkikar, P.S., Rigney, J.D., Lewandowski, J.J., Vedula, K.,MRS Proceedings, (Fall 1988).Google Scholar
5. Rigney, J., Abada, A., and Vedula, K., AMMPEP, 3(3)i–ii, 391 (1988).Google Scholar
6. ASTM Annual Book of Standards, 10, Am. Soc. for Test. and Mat., E-399, 592 (1981).Google Scholar
7. Tada, H., Paris, P. and Irwin, G., The Stress Analysis of Cracks Handbook, DEL Research Corporation, (1978).Google Scholar