Taking account and electronic transmission microscopy monitoring of microcrack nucleation and propagation in the structural materials of objects utilizing atomic energy

• DOI: 10.1007/s10512-009-9139-9
• Publication Date: 2009-05-11T02:31:44Z
• Authors: V. M. Dorovskoi; I. A. Tutnov; V. V. Kozlov; E. M. Kudryavtsev
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

Experimental data for monitoring microcrack nucleation and propagation in metallic samples are obtained for copper. New experimental results from a study performed with a transmission electron microscope of crack nucleation in copper samples deformed by stretching are presented. The results of monitoring a dislocation-free fracture zone in front of a microcrack tip are described. It is found experimentally that the metal in this zone underwent a transition from a crystalline into an amorphous state and embryonic microcracks originated precisely in this zone.