Statistical and metallographic views on quantification of intermetallic phases in austenitic stainless steels
Typ dokumentu
stať ve sborníkuconference paper
Peer-reviewed
publishedVersion
Autor
Pilsová L.
Altová A.
Mára V.
Práva
openAccessMetadata
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This article deals with the metallographic evaluation of SUPER 304H austenitic stainless steel, which is mainly used in energetics. The experimental material is in the state after longterm laboratory aging, which simulates the effect of increased temperature during real operation in a power plant. New phases are formed in the material, the amount of which can be determined by evaluating their area fraction on the optical micrographs. In the first place, the results can be influenced by the choice of etching method during metallographic preparation. The results of the following thresholding are often interpreted without verifying the validity of the data using statistical methods. Therefore, we introduce simple statistical analysis to check for the normal distribution of the data. The results of this analysis imply that there is either a combination of two morphological types of the present phase, or its incorrect differentiation from the carbidic particles.
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Kolekce
- Publikační činnost ČVUT [1320]