Publication detail

Determination of the cast structure parameter on the basis of micro-segregation analysis

DOBROVSKÁ, J. KAVIČKA, F. STRÁNSKÝ, K. DOBROVSKÁ, V.

Original Title

Determination of the cast structure parameter on the basis of micro-segregation analysis

Type

conference paper

Language

English

Original Abstract

The paper deals with the new method for estimation of the average dendrite arm spacing on the basis of parameters of solidification of the relevant metallic alloy and of the theory of physical similarity. The following parameters determine dendritic structure of cast metallic alloys: diffusion coefficient of elements in solid DS, partition coefficient of elements, local solidification time, rate of crystallization and chemical eterogeneity of the given alloy, quantified usually with maximum cmax, and initial c0 concentration of elements in the given area of alloy. Verification of the method was carried out both theoretically and experimentally. An average secondary dendrite arms spacing has been calculated as a function of the cooling rate according to relations given in literature. The dendrite arm spacing was also estimated metallographically for nine samples taken from cross section of a lowcarbon continuously cast steel. It was found out that for short local solidification times the average dendrite arm spacing determined with use of the new method was lower than values calculated according to literature or determined metallographically. However, calculation for long local solidification times with use of the new method corresponded very well with both calculated and measured values.

Keywords

Metallic alloy, dendrite arm spacing, parameters of solidification, new method for estimation

Authors

DOBROVSKÁ, J.; KAVIČKA, F.; STRÁNSKÝ, K.; DOBROVSKÁ, V.

RIV year

2012

Released

19. 9. 2012

Publisher

University of Parma

Location

Parma, Italy

ISBN

9788895940441

Book

The 4th International Conference on Crack Paths (CP 2012). Book of abstracts and CD

Edition number

1

Pages from

106

Pages to

106

Pages count

1

BibTex

@inproceedings{BUT94027,
  author="Jana {Dobrovská} and František {Kavička} and Karel {Stránský} and Věra {Dobrovská}",
  title="Determination of the cast structure parameter on the basis of micro-segregation analysis",
  booktitle="The 4th International Conference on Crack Paths (CP 2012). Book of abstracts and CD",
  year="2012",
  number="1",
  pages="106--106",
  publisher="University of Parma",
  address="Parma, Italy",
  isbn="9788895940441"
}