Accession Number : AD0432203


Title :   REVIEW OF RECENT DEVELOPMENTS. FIBER-REINFORCED MATERIALS,


Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OHIO DEFENSE METALS INFORMATION CENTER


Personal Author(s) : Wagner,H J


Report Date : 06 Mar 1964


Pagination or Media Count : 3


Abstract : The stress-strain behavior of composites made by infiltrating bundles of W wire with molten Cu was reported by workers at NASA Lewis Research Center. NASA Lewis Research Center conducted a study to determine the effect of alloying the matrix on the tensile properties and microstructure of W-fiber-reinforced composites. Composites were made of W wires infiltrated with binary alloys of Cu with Al, Cr, Co, Nb, Ni, Ti, and Zr. In addition, selected Ni-base and Cobase alloys were used as matrices. Analysis of composites made by infiltrating alpha-Al2O3 whiskers with molten Ag showed that between 80 and 97% of the whiskers' strength can be utilized at room temperature. At temperatures exceeding 90% of the melting point of Ag, the utilization factor is 30 to 60%. A composite made from Rene' 41 reinforced with fine alpha-Al2O3 was made with no apparent damage to the whiskers as a result of exposure to the liquid alloy during fabrication. (Author)


Descriptors :   *METALLIC TEXTILES , *TUNGSTEN , *ALUMINUM COMPOUNDS , REINFORCING MATERIALS , REINFORCING MATERIALS , REINFORCING MATERIALS , COPPER ALLOYS , SILVER , NICKEL ALLOYS , SILVER , NICKEL ALLOYS , NICKEL , COBALT ALLOYS , CHROMIUM ALLOYS , OXIDES , WIRE , FIBERS , MECHANICAL PROPERTIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE