The effect of dislocation self-blocking in intermetallic compounds with an anomalous temperature dependence of yield stress was theoretically and experimentally analyzed. In essence, this effect was a dislocation self-immersion in a deep potential relief valley (without external stress). The possibility of reconstructing the relief shape (from one-valley to two-valley) was shown and the relief parameters were reported. The allowed and forbidden regions for self-blocking were revealed. The method for determining the ratio of the valley depths by measuring the self-blocking limiting angles between the dislocation segments was proposed. Transmission electron microscopy images of the dislocation structure could be used to this end. As an example, this ratio was estimated for a super-partial dislocation sliding in the cube plane in Ni3Ge.

Reconstruction of Dislocation Potential Relief by Means of Self-Blocking Effect. B.A.Greenberg, M.A.Ivanov, A.V.Plotnikov: Crystallography Reports, 2010, 55[6], 1025-30