High-Temperature Properties of Graphite. II. Creep in Tension

Abstract

Measurements have been made on the steady-state creep rates of graphite in tension in the temperature range 2270 to 3270°K. Molded, extruded, and uranium ``loaded'' graphites were used in the course of investigation. The general characteristics of creep in graphite at high temperatures have been described in the literature and the results presented here covering the range of steady-state creep 10−7 to 10−4 cm/cm-sec are in accord with published results. In addition, the tensile steady-state creep data are correlated by a classical rate equation of the form, rate=f(U)(σ/σB)n exp(−E/RT), where f(U) is a function of the uranium concentration in the graphite.