Mechanical properties of tungsten and steel fiber reinforced Zr{sub 41.25}Ti{sub 13.75}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5} metallic glass matrix composites
- California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Lab. of Engineering Materials
- Mitchell Madison Group, San Francisco, CA (United States)
To increase the toughness of a metallic glass with the nominal composition Zr{sub 41.25}Ti{sub 13.75}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5}, it was used as the matrix in continuous fiber composites reinforced with tungsten and 1080 steel wire. The composites were tested in compression and tension experiments. Tungsten reinforcement increased compressive strain to failure by over 900% compared to the unreinforced Zr{sub 41.25}Ti{sub 13.75}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5}. The increase in compressive toughness comes from the fibers restricting shear band propagation, promoting the generation of multiple shear bands and additional fracture surface area. There is direct evidence of viscous flow of the metallic glass matrix within the confines of the shear bands. Samples reinforced with steel had increased tensile strain to failure and energy to break of 13 and 18%, respectively. Tensile toughness increased as a result of ductile fiber delamination, fracture, and fiber pullout.
- OSTI ID:
- 302349
- Journal Information:
- Acta Materialia, Vol. 46, Issue 17; Other Information: PBD: 2 Nov 1998
- Country of Publication:
- United States
- Language:
- English
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