Detail publikace

Method for Measurement of Chemical Micro-Heterogeneity of Carbon in Continuously Cast Billets

STRÁNSKÝ, K. REK, A. DOBROVSKÁ, J. DOBROVSKÁ, V. KAVIČKA, F. SEKANINA, B.

Originální název

Method for Measurement of Chemical Micro-Heterogeneity of Carbon in Continuously Cast Billets

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The paper deals with the method of quantitative wave dispersive X-ray spectral micro-analysis used for measurement of the mass concentration of carbon in the continuously cast steel billet. The main conditions for preparation of metallographic sections from the samples taken from continuously cast billets are described, if the samples are designated for determination of the carbon concentration by the above mentioned method. These conditions must be unconditionally adhered to in order to ensure a reproducibility of the measurements of the mass concentrations of carbon. A limit of detectability of carbon is given and errors of the measurement of carbon at the measurement on the limit of detectability at the measurement of its mass concentration on the spectral line C K with use of the standard Fe3C. The proposed method of measurement of the carbon concentration was applied for simultaneous determination of the distribution of mass concentration of carbon, manganese, silicon and phosphorus in nine samples taken from the continuously cast billets made of unalloyed steel. Concentrations of these four elements was in individual samples measured in the segment with the length of approx. 1 mm at 100 points with the use of an analytical complex JEOL JXA-8600/KEVEX DELTA V-Sesame and wave dispersion analysis (VDA). Mathematical-statistical processing of the results of measurement showed that the carbon concentration can be determined in a reproducible manner and that it is possible to at the same time to explain its relationship to the distribution of simultaneously analysed elements - manganese, silicon and phosphorus in the structure of the continuously cast steel billet.

Klíčová slova

Steel block, wave dispersive X ray, spectral micro analysis, effective partition coefficients, heterogeneity index, mass concentration C, Mn, Si, P.

Autoři

STRÁNSKÝ, K.; REK, A.; DOBROVSKÁ, J.; DOBROVSKÁ, V.; KAVIČKA, F.; SEKANINA, B.

Rok RIV

2013

Vydáno

15. 11. 2013

ISSN

0018-8069

Periodikum

Hutnické listy

Ročník

2013

Číslo

5

Stát

Česká republika

Strany od

66

Strany do

73

Strany počet

8

BibTex

@article{BUT103135,
  author="Karel {Stránský} and Antonín {Rek} and Jana {Dobrovská} and Věra {Dobrovská} and František {Kavička} and Bohumil {Sekanina}",
  title="Method for Measurement of Chemical Micro-Heterogeneity of Carbon in Continuously Cast Billets",
  journal="Hutnické listy",
  year="2013",
  volume="2013",
  number="5",
  pages="66--73",
  issn="0018-8069"
}