The Effect of Small Concentrations of Carbon Impurity on Dislocation Mobility in Iron Monocrystals

摘要

Experiments have recently been reported by Turner and Vreeland (1) in which the dislocationudvelocities in pure iron single crystals were measured. This paper describes some limited resultsudfor identical experiments on crystals containing approximately 45 ppm by weight, of carbon. Theseudresults indicate that the carbon has very little effect on the velocity of free dislocations.udHowever strong pinning effects were observed for aged dislocations.