The analysis of changes in structure-phasic composition of heat-resistant steel of system alloyed steel Cr-Mo-V in high-temperature equipment in the process of long-term exploitation.
The results of metal-graphic analysis of destruction structure and surface in high pressure steam pipe-line are given below. The structure and composition of scale on the inside surface of pipe-line are investigated in detail, which were formed in the process of long-term thermo-force influence. We show the redistribution of basic alloyed steel elements between the bace and the carbide phase by the method of local spectral analysis.