Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Discussions are presented in some of the controversial areas regarding the interpretation of the strengthening mechanism in neutron irradiated copper single crystals. The specific topics that are discussed include the following: the correlation of cross‐head speed changes to strain rate changes, the strain rate dependence of the flow stress, the temperature dependence of the pre‐exponential factor, the free energy and the enthalpy of a activation, the defect and obstacle size spectrum, and the nature of the force‐distance behavior for the interaction of mobile dislocations with irradiation produced obstacles. It is shown that many of the recent arguments made against our previously published explanation of the strengthening mechanism can be readily explained without changing our interpretation.</jats:p>