Abstract
By the method of transmission electron diffraction microscopy the study of 0.12C-1Cr-1Mo-1V-Fe steel samples subjected to various long-term operation was conducted: 1) on the unfinished sample, 2) after prolonged operation without sample destruction, and 3) after prolonged operation brought to sample destruction. For each sample the phase composition was determined and the change in morphology of the structure was studied. It is established that operation of steel leads, firstly, to the destruction of plate pearlite and intensive ferrite fragmentation, secondly, to the redistribution of carbide component and, thirdly, to elastic distortion of the crystal lattice.
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