Effect of Alloying Elements on Properties and Structure of High Chromium Cast Irons

The paper deals with hypereutectic high chromium cast irons. The subject of examination was the effect of various alloying elements (Ti, W, Mo, V) on the size of primary carbides and on the resultant material hardness. Using a scanning electron microscope with a wave dispersion analyser, the carbon...

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Bibliographic Details
Published inArchives of metallurgy and materials Vol. 63; no. 2
Main Authors Záděra, A, Kaňa, V, Krutiš, V
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.01.2018
Subjects
Acicular structure
Alloying elements
Carbides
Carbon content
Cast iron
Chromium
Electron microscopes
high chromium cast irons
Molybdenum
refinement
Titanium
Tungsten
Vanadium
Wave dispersion
wear resistance
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Summary:The paper deals with hypereutectic high chromium cast irons. The subject of examination was the effect of various alloying elements (Ti, W, Mo, V) on the size of primary carbides and on the resultant material hardness. Using a scanning electron microscope with a wave dispersion analyser, the carbon content in carbides was established. To determine the other elements, an energy dispersion analyser was used. It was found that both the primary and the eutectic carbides were of the M7C3 type and very similar in composition. The carbides always contained Cr and Fe, and also W, Mo, V or Ti, in dependence on the alloying elements used. The structure of materials containing only chromium without any alloying additions exhibited coarse acicular primary carbides. The structure of materials alloyed with another element was always finer. Marked refinement was obtained by Ti alloying.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1733-3490
2300-1909
DOI:10.24425/122384