Accession Number : AD0438478


Title :   STUDY OF SIZE EFFECT IN FINE BERYLLIUM WIRE PHASE II,


Corporate Author : NAVAL AIR ENGINEERING CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB


Personal Author(s) : Soltis,Paul


Report Date : 27 Mar 1964


Pagination or Media Count : 2


Abstract : The 0.0046-in. diameter, as-drawn, beryllium wire can be chemical-milled to sizes near 0.0010in. diameter which show dimensional uniformity and good surface quality. A continuous trend toward higher strength with decreasing diameter of the wire was noted, and it appears possible that ultrafine wire with strength approaching the 200,000 psi level can be produced with consistency. A good degree of ductility was noted in wire chemical-milled below 0.0025-in. diameter as evident in necking of specimens; although, this ductility did not appear in tensile elongation values. Fract/re strengths in wire showing ductile fractures reached values near 220,000 psi. (Author)


Descriptors :   *METALLIC TEXTILES , WIRE , BERYLLIUM , FIBERS , TENSILE PROPERTIES , CHEMICAL MILLING , TEST EQUIPMENT , HARDNESS , GRAIN STRUCTURES(METALLURGY) , PHOTOMICROGRAPHY , FRACTURE(MECHANICS) , DUCTILITY , SCALE


Distribution Statement : APPROVED FOR PUBLIC RELEASE