DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0260214
Title:
FIBER-REINFORCED METALS AND ALLOYS
Corporate Author:
IIT RESEARCH INST CHICAGO ILL
Report Date:
1961-06-27
Abstract:
Studies are being made of fiber-reinforced metals and alloys to evaluate their mechanical properties The deformation characteristics of v rious composites were studied to determine 1 the strengthening mechanism of the composite and 2 why the yield strength is dependent upon the type of fiber. micro-yield measurements were made on composite specimens of Ag-10 mild steel and Ag-30 mild steel fibers 0.0025 to 0.003 in. in diameter, and on Ag with 30 fibers of mild steel, Mo, and heat-treated hardened type 410 stainless steel. The surface of a Cu-30 Mo fiber composite was polished and examine metallographically as a function of strain. Failed sections of Cu-10 and -40 Mo fiber composites were examined. Three important features in the deformation behavior of fiberreinforced metals are 1 for a given type of fiber, the rate of work hardening is highly dependent on fiber density at small plastic trains, and relatively independent of fiber density at high strains 2 for the initial 2 elongation, deformation is restricted to the softer matrix and 3 for a given matrix, fiber size, and fiber density, the yield strength at small strains is nearly indepe dent of the type of fiber, but becomes significantly dependent at higher strain .
Pages:
0012
Contract Number:
NOw-61-0555
File Size:
0.00MB
