EVALUATION OF MICROSTRUCTURE OF STEEL FOR THE POWER INDUSTRY BY MEANS OF THE TRIAFOLE REPLICA METHOD
DOI:
https://doi.org/10.7494/mafe.2013.39.1.6Keywords:
non-destructive testing, triafole replica, 10CrMo9-10 steel, power industryAbstract
The paper presents microstructures of steel designated for the operation at elevated temperatures in the power industry. Materials were examined both in the initial state as well as after the operation. The microstructure was examined using triafol replicas to determine the degree of materials wearing out. The quality of the structure representation on triafol replicas was checked, comparing them with the images from microsections. Attempts were made to improve the structure image quality on replicas through application of various degrees of microsection etching, and observation of unshaded and shaded replicas.
The paper presents also most frequently encountered technological defects originating during replica preparation.
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