Numerical Model for Solidification Zones Selection in the Large Ingots

• Autorzy: Wołczyński W. , Kwapisiński P. , Kania B. , Wajda W. , Skuza W. , Bydałek A. W.

Identyfikatory

DOI

10.1515/afe-2015-0085

• Języki publikacji: EN

Abstrakty

EN

A vertical cut at the mid-depth of the 15-ton forging steel ingot has been performed by curtesy of the CELSA – Huta Ostrowiec plant. Some metallographic studies were able to reveal not only the chilled undersized grains under the ingot surface but columnar grains and large equiaxed grains as well. Additionally, the structural zone within which the competition between columnar and equiaxed structure formation was confirmed by metallography study, was also revealed. Therefore, it seemed justified to reproduce some of the observed structural zones by means of numerical calculation of the temperature field. The formation of the chilled grains zone is the result of unconstrained rapid solidification and was not subject of simulation. Contrary to the equiaxed structure formation, the columnar structure or columnar branched structure formation occurs under steep thermal gradient. Thus, the performed simulation is able to separate both discussed structural zones and indicate their localization along the ingot radius as well as their appearance in term of solidification time.

Słowa kluczowe

EN

theory of crystallization; thermal gradient field; constrained solidification; unconstrained solidification

PL

teoria krystalizacji; gradientowe pole temperatury; krzepnięcie ograniczone

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 4
• Strony: 87--90
• Opis fizyczny: Bibliogr. 19 poz., rys., wykr.

Twórcy

autor

Wołczyński W.

• Institute of Metallurgy and Materials Science, W. Reymonta 25, 30-059 Kraków, Poland

autor

Kwapisiński P.

• KGHM Polska Miedź S.A., M. Skłodowskiej-Curie 48, 59 301 Lubin, Poland

autor

Kania B.

• Institute of Metallurgy and Materials Science, W. Reymonta 25, 30-059 Kraków, Poland

autor

Wajda W.

• Institute of Metallurgy and Materials Science, W. Reymonta 25, 30-059 Kraków, Poland

autor

Skuza W.

• Institute of Metallurgy and Materials Science, W. Reymonta 25, 30-059 Kraków, Poland

autor

Bydałek A. W.

• AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

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