Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-09T05:51:31.406Z Has data issue: false hasContentIssue false
  • English
  • Français

Laminate Orientation and Thickness Effects on An Scs-6/Ti-24ai-11 Nb Composite Under Thermal Fatigue

Published online by Cambridge University Press:  15 February 2011

William C. Revelos  and
Itzhak Roman
William C. Revelos
Affiliation:
Materials Directorate, Wright Laboratory, WL/MLLN Wright-Patterson AFB, OH 45433
Itzhak Roman
Affiliation:
The Hebrew University of Jerusalem, Jerusalem, Israel 91904
Get access

Abstract

A SiC/Ti-24AI-11 Nb (at. %) composite (30–35 vol. %) was thermally cycled in air and an inert environment between 150 °C and 815 °C for various cycle counts. Various hold times at maximum temperature were employed to determine timedependent effects on composite integrity. Laminate orientations investigated included: [0]4, [0]8, [90]4, [90]8 and [0/90]2S. Acoustic emission produced during thermal fatigue of selected specimens was employed to monitor damage progression. Post-cycling room temperature tension tests as well as optical and scanning electron microscopy were used to document damage, which was particularly acute when hold times at temperature were employed on tests performed in air. The roles of the environment, composite thickness, and off-axis fibers during thermal fatigue on the composite strength and integrity are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 273: Symposium Q – Intermetallic Matrix Composites II , 1992 , 53
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.)

References

REFERENCES

1. Russ, S.M., Metall. Trans. A, 21, 1595 (1990).Google Scholar
2. Revelos, W.C. and Smith, P.R., Metall. Trans. A, 23, 587 (1992).CrossRefGoogle Scholar
3. Brindley, P.K., MacKay, R.A., and Bartolotta, P.A. in Titanium Aluminide Composites, edited by Smith, P.R., Balsone, S.J. and Nicholas, T., WL-TR-91 4020, Wright-Patterson AFB, OH, February 1991, pp. 484–496.Google Scholar
4. Khobaib, M. in Proceeding of the American Society for Composites. Edited by Sternstein, S.S. (Technomic Publishing, Lancaster, PA 1991) pp. 638–647.Google Scholar