Neutron diffraction study of the kinetics of low-temperature martensite decomposition in medium-carbon steel

It is found that the low-temperature decomposition of martensite in quenched medium-carbon steel occurs in two stages. In the first stage, the rate of decomposition is higher than that in the subsequent stage. Application of the neutron diffraction method allows the identification of two stages of t...

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Bibliographic Details
Published inSurface investigation, x-ray, synchrotron and neutron techniques Vol. 10; no. 5; pp. 989 - 991
Main Authors Alekseev, A. A., Grinberg, E. M., Sheverev, S. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2016
Springer Nature B.V
Subjects
Chemistry and Materials Science
Low temperature
Materials Science
Medium carbon steels
Surfaces and Interfaces
Thin Films
low-temperature martensite decomposition
neutron diffraction
carbon content
microhardness
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Summary:It is found that the low-temperature decomposition of martensite in quenched medium-carbon steel occurs in two stages. In the first stage, the rate of decomposition is higher than that in the subsequent stage. Application of the neutron diffraction method allows the identification of two stages of transformation in the first stage of martensite decomposition. It is shown that the first stage is associated predominantly with carbon segregation at dislocations, and the second, with the outdiffusion of carbon from the supersaturated solid solution with the formation of dispersed particles of metastable carbides.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451016050049