Composite, metal matrix material part with a high rigidity and high stability in a longitudinal direction
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United States of America Patent
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Mar 6, 2001
Grant Date -
N/A
app pub date -
Nov 13, 1998
filing date -
Dec 4, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An elongated part, of composite, metal matrix material, respectively comprises 35 to 45 vol. % of a matrix based on aluminum or magnesium alloy and 65 to 55 vol. % of continuous carbon fibers, arranged in sheets parallel to the length thereof. At least approximately 90% of the carbon fibers are ultra-high modulus fibers. In 25 to 60% of the sheets, said fibers are oriented at 0%.+-.5.degree. with respect to the longitudinal direction of the part, when the matrix is based on aluminum. In the other sheets, the fibers are then oriented between .+-.20 and .+-.40.degree. with respect to said direction. When the matrix is based on magnesium, the ultra-high modulus fibers are oriented at 0.degree..+-.5.degree. in at least 90% of the sheets. This gives a high rigidity and high stability in the indicated direction, which favors applications in the space industry.
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