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Analysis of Microstructure Images Referred to Percolation Theory

Trzaskowski W., Sobaszek W., Myszka D., Świłło S.

Archives of Foundry Engineering

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2015

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Vol. 15, iss. 1

109--112

EN

The paper discusses possible applications of the percolation theory in analysis of the microstructure images of polycrystalline materials. Until now, practical use of this theory in metallographic studies has been an almost unprecedented practice. Observation of structures so intricate with the help of this tool is far from the current field of its application. Due to the complexity of the problem itself, modern computer programmes related with the image processing and analysis have been used. To enable practical implementation of the task previously established, an original software has been created. Based on cluster analysis, it is used for the determination of percolation phenomena in the examined materials. For comparative testing, two two-phase materials composed of phases of the same type (ADI matrix and duplex stainless steel) were chosen. Both materials have an austenitic - ferritic structure. The result of metallographic image analysis using a proprietary PERKOLACJA.EXE computer programme was the determination of the content of individual phases within the examined area and of the number of clusters formed by these phases. The outcome of the study is statistical information, which explains and helps in better understanding of the planar images and real spatial arrangement of the examined material structure. The results obtained are expected to assist future determination of the effect that the internal structure of two-phase materials may have on a relationship between the spatial structure and mechanical properties.

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Wybrane aspekty obróbki wiórowej wyrobów ze stali nierdzewnych austenitycznych

Czechowski K., Stós J., Wronska I.

Obróbka Metalu

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2013

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nr 4

14--19

PL

Przedstawiono przykłady stali nierdzewnych o strukturze austenitycznej. Omówiono zagadnienia obróbki wiórowej wyrobów z tych stali. Zamieszczono przykładowe parametry skrawania dla toczenia i frezowania stali nierdzewnych austenitycznych.

EN

Examples of stainless steels of austenitic structure are presented. Machining of products from such steels is considered. Examples of machining parameters for turning and milling of austenitic stainless steels are presented.

3

Zmiany w strukturze strefy pośredniej podczas natryskiwania detonacyjnego

Jeleńkowski J., Borowski T., Babul T.

Inżynieria Materiałowa

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2008

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Vol. 29, nr 6

595-597

PL

Przeprowadzono badania porównawcze mikrostruktury w strefie pośredniej powłoka (WC/Co)-podłoże stal Ni27Ti2AlMoNb o strukturze austenitycznej i martenzytyczno – austenitycznej. Przemysłowe warunki wytwarzania powłok powodowały zmiany w strukturze i składzie chemicznym tej strefy. Z powłoki do podłoża i w kierunku przeciwnym nastąpiło przemieszczenie i dyfuzja pierwiastków stopowych.

EN

The comparative research of the microstructures in the intermediate zone, between WC/Co coating and the N27Ti2AlMoNb steel base, with the austenite and austenite-martensite structures, were performed. The industrial conditions in manufacturing of the coatings caused changes to the structure and chemical composition of this zone. The transfer and diffusion of alloyed elements, from coating to base and in the opposite direction, occurred.