Development of Beryllium with Improved Impact Resistance.
Abstract
Polycrystalline beryllium normally fails under ballistic impact at values of 0.3 to 0.7 foot-pounds when the specimen is 0.100 inch thick. This failure is accompanied by fast propagation of cracks resulting in actual shattering of the specimen. While the actual impact energy required to produce a crack was not substantially improved in the course of this work, several procedures were identified which materially limited the propagation of the cracks and delayed the shattering phenomenon. The ballistic impact resistance of 0.100 inch thick single crystal specimens of the major orientations was tested and found to be slightly better than the performance of the polycrystalline metal. The most favorable orientation was impact on a plane inclined at about 45 deg. to the basal plane. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 15, 1968
- Accession Number
- AD0845106
Entities
People
- A. J. Stonehouse
- D. H. Woodard
- W. W. Beaver