Influence of the reforging degree on the annihilation of the segregation defects in the massive forging ingots

• Autorzy: Kowalski J. , Pstruś J. , Pawlak S. , Kostrzewa M. , Martynowski R. , Wołczyński W.

Warianty tytułu

PL

Wpływ stopnia przekucia na zanik defektów segregacyjnych w masywnym wlewku kuziennym

• Języki publikacji: EN

Abstrakty

EN

The structural zones of the forging ingot have been distinguished. Some segregation defects within these zones have been described. An observation of the defects has been carried out with the use of scanning microscopy and scanning acoustic microscopy. Some defects revealed by the scanning acoustic microscopy have been subjected to the 3D computer visualization. A difference between localization and difference between morphology of carbides precipitated in the columnar structure and equiaxed structure has been shown. A given ingot was subjected to the plastic deformation with different reforging degree. The samples were taken from different segments of the reforged ingot. A density was determined for each ingot segment. A degree of consolidation was determined after ingot reforging. Once again the scanning acoustic microscopy was applied to determine the annihilation of the segregation defects in the forging ingot structure. A new definition of the consolidation factor after the reforging has been proposed.

PL

Wyrózniono strefy strukturalne we wlewku kuziennym. Opisano defekty segregacyjne w wyróżnionych obszarach jego struktury. Przeprowadzono obserwacje defektów z użyciem mikroskopu skaningowego oraz ultradźwiękowego. Dokonano trójwymiarowej komputerowej wizualizacji defektów odkrytych mikroskopem ultradźwiękowym. Pokazano róznice w lokalizacji i morfologii weglików wydzielonych w strukturze kolumnowej oraz w strukturze równoosiowej. Wybrany wlewek kuzienny poddano przeróbce plastycznej z róznymi stopniami przekucia. Pobrano próbki materiału z poszczególnych segmentów przekutego wlewka. Oceniono gęstość materiału w badanych segmentach wlewka. Oceniono stopień zagęszczenia materiału w wyniku przekucia. Ponownie użyto mikroskopu ultradźwiękowego aby ocenić zanik defektów segregacyjnych w strukturze wlewka kuziennego. Zaproponowano nowa definicję wskaźnika zageszczenia wlewka po przekuciu.

Słowa kluczowe

EN

consolidation degree; structural zones; segregation defects

PL

stopień konsolidacji; strefy strukturalne; defekty segregacyjne

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2011
• Tom: Vol. 56, iss. 4
• Strony: 1029--1029
• Opis fizyczny: -–1043, Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Kowalski J.

autor

Pstruś J.

autor

Pawlak S.

autor

Kostrzewa M.

autor

Martynowski R.

autor

Wołczyński W.

• "Celsa - Huta Ostrowiec" Company Ltd., 27 400 Ostrowiec Swiętokrzyski, 2 Samsonowicza Str., Poland

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