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A metallic composite material and nuclear components such as fuel cladding, rod guide thimbles, grids and channels made therefrom. The metallic composite material comprises 90-60 volume percent of a metal matrix of zirconium or a zirconium alloy containing homogeneously incorporated, throughout the

A metallic composite material and nuclear components such as fuel cladding, rod guide thimbles, grids and channels made therefrom. The metallic composite material comprises 90-60 volume percent of a metal matrix of zirconium or a zirconium alloy containing homogeneously incorporated, throughout the matrix, 10-40 volume percent of silicon carbide whiskers.

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In a nuclear reactor having metallic components, the improvement wherein at least one metallic component is a composite metallic component, said composite metallic component comprising a member formed from 90-60 volume percent of a metal matrix of a metal selected from the group consisting essential

In a nuclear reactor having metallic components, the improvement wherein at least one metallic component is a composite metallic component, said composite metallic component comprising a member formed from 90-60 volume percent of a metal matrix of a metal selected from the group consisting essentially of zirconium and a zirconium alloy containing less than about 5 percent by weight of an alloying element, said metal matrix having homogeneously incorporated, throughout said matrix, 10-40 volume percent of silicon carbide whiskers. In a nuclear reactor containing metallic components including at least one of fuel cladding, control rods, rod guide thimbles, grids and channels, the improvement wherein said at least one of said metallic components is formed from a metallic composite comprising 90-60 volume percent of a metal matrix of a metal selected from the group consisting essentially of zirconium and a zirconium alloy containing less than about 5 percent by weight of an alloying element, said metal matrix having homogeneously incorporated, throughout said matrix, 10-40 percent by volume of silicon carbide whiskers.