Article ID Journal Published Year Pages File Type
1445981 Acta Materialia 2014 9 Pages PDF
Abstract

We present a complete analysis of the velocity of individual screw dislocations in pure iron, as a function of stress and temperature, by means of in situ straining experiments in a transmission electron microscope. The results show a very pronounced deviation from the classical laws of thermodynamics, which is at the origin of the discrepancy between experimental and calculated deformation stresses at low temperature. This strongly supports the occurrence of large quantum effects proposed in a recent theoretical study.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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