The flow and recovery properties of nearly stoichiometric polycrystalline uranium carbide were studied in the temperature range 1500° to 1900°C at strain rates varying between 2×10−5/sec to 2×10−3/sec. The flow data seem to follow a relationshipε̇≅Kσ5exp(−37 500/RT), whereε̇ is the strain rate, K a proportionality constant, R the gas constant, T the absolute temperature, and σ the flow stress at strain =0.001. A mathematical evaluation from recovery data of the activation volume associated with dislocation motion is presented and its potential to yield basic information on the mechanism of work hardening is discussed.
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Roger Chang (1962) studied this question.