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Metal Matrix Composites




ISBN 9781315895345
Published December 12, 2017 by CRC Press
180 Pages

 
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Book Description

The concept of reinforcing a material by the use of a fiber is not a new one. The Egyptian brick layer employed the same principle more than three thousand years ago when straw was incorporated into the bricks. More recent examples of fiber reinforced composites are steel-reinforced concrete, nylon and rayon cord reinforced tires, and fiberglass reinforced plastics. In the last several years considerable progress has been made on new composite structures particularly utilizing boron (on tungsten substrate) fibers in various matrices. Many of these advances have been reviewed recently by P. M. Sinclair1 and by Alexander, Shaver, and Withers.2 An excellent earlier survey is available by Rauch Sutton, and McCreight.3 Boron-reinforced epoxy composites are being fabricated and tested as jet engine components, fuselage components, and even as a complete aircraft wing because of the tremendous gain in experimentally demonstrated properties such as modulus, strength, and fatigue resistance, particularly on a weight normalized (e.g., strength/density) basis. Other than glass/epoxy and boron/ epoxy composites and perhaps boron/aluminum, the systems now under study are in the early stages of research and development. These include other boron/metal composites, graphite/polymer, graphite/metal, graphite/graphite, alumina/metal, and aligned eutectic (directionally, solidified) combinations. As Sinclair points out, designers are wary about filamentary composites becausethere is little background information and scant experience.

Table of Contents

1. Reinforcements 2. Consolidation 3. Compatibility and Fabrication 4. Refractory Metal Wire Composites 5. Whisker Reinforced Metal 6. Tensile Properties 7. Compression 8. Fatigue 9. Impact 10. Elevated Temperature Tensile Strength 11. Creep and Stress Rupture 12. Eutectic Composites 13. Mechanics of Composites 14. Improved Mechanical Properties 15. Some Prospects for the Future

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