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XD(TM) Reinforced Beryllium-Based Composites
Final technical rept. Mar 1985-Aug 1990
MARTIN MARIETTA ELECTRONICS AND MISSILES GROUP ORLANDO FL MISSILE SYSTEMS
Pagination or Media Count:
The objective of this program is to demonstrate the feasibility of using fine particle inoculants called dispersoids to produce fine-grained beryllium castings. Such castings would be much less expensive than beryllium- based materials produced by conventional powder metallurgy. Beryllium is an attractive candidate for lightweight aerospace applications. It has higher melting temperature and greater tensile strength than either magnesium or aluminum, a higher strength-to-weight ratio than either metal, and a lower thermal coefficient of expansion and higher specific heat. Its modulus of elasticity is four times that of aluminum. The low density and high modulus of beryllium and beryllium based intermetallics make them ideal materials for aerospace applications requiring high dimensional stability and low weight.
APPROVED FOR PUBLIC RELEASE