The Investigation of Microhardness of Grey Cast Iron Dendritic Structure

Aleksandr A. Baron; Lyubov' V. Palatkina; I.L. Gonik

doi:10.4028/www.scientific.net/SSP.284.397

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The Investigation of Microhardness of Grey Cast Iron Dendritic Structure

Abstract:

The dependence of the dendritic crystals of primary austenite microhardness on indentation load within the range from 0,01 to 2 N is investigated. Tests are carried out on specimens with a volume fraction of a dendritic component of 15%, 30% and 60%. It is found that at any volume of dendritic fraction microhardness increases with an increase in load from 0,01 to 0,1 N and then, in the process of a further indentation load growth, decreases a little. Decrease in microhardness in the range of loadings from 0,1 N to 2 N can be accounted for by growth of an impression size and a spread of plastically deformed volume to a dendritic crystal surface.

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Periodical:

Solid State Phenomena (Volume 284)

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397-401

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.284.397

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Online since:

October 2018

Authors:

Aleksandr A. Baron*, Lyubov' V. Palatkina, I.L. Gonik

Keywords:

Dendritic Crystals of Primary Austenite, Grey Cast Iron, Lamellar Graphite, Microhardness

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References

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