A review of the methods of measuring the strength of whiskers and their role in reinforcing ductile metal matrices.

Abstract

Nomenclature d = diam, in. E = Young's modulus, psi G = shear modulus, psi L = fiber length, in. L' = ineffectual length (function of composite strain), in. L c = critical fiber length, in. S = fracture stress, psi V -volume fraction /3 = effective fiber strength factor for fibers in a matrix (Sf*)/(S f ) fi' = effective fiber strength factor for fibers in a bundle 7 = empirical factor accounting for matrix work-hardening a, (T rn f = tensile stress, psi 07oo -tensile stress of infinitely long fiber T -shear stress, psi { } = average quantity Subscripts f = fiber or whisker c = composite ra = matrix Superscript * = a property in the matrix

Single Crystal Growth of Titanium Carbide by Chemical Vapor Deposition

“…The extrapolated value to 5~ is about 1000 k g / m m 2. The tensile strength of titanium carbide whiskers, therefore, is estimated to exceed that of iron (250 kg/mm2), sapphire (350 k~/mm2), and alumina (560 k g / m m 2) for the same diameter (10).…”