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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 568 - 575 (8page)
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The heat transfer and solidification microstructure evolution during continuous casting were experimentally studiedin this work. A new approach to physically simulate the steel solidification behavior during continuous castingwas developed. Six steel grades with different solidification mode were introduced to elucidate the carbon equivalentdependent mold heat flux, prior austenite grain size and secondary dendrite arm spacing. It is found that thenon-steady mold heat fluxes in the experiment against time for all steel grades are comparative to that versus distancein practical continuous casting. Due to the occurrence of L→L+δ→δ+γ→γ transformation with the largestamount of volume contraction in hypo-peritectic steel, it shows the lowest mold heat flux among these six steelgrades. It is also demonstrated from the solidification microstructure results that the prior austenite grain size andsecondary dendrite arm spacing in the physical simulation are in good agreement with those in continuously caststrand. In addition, the steel with a higher temperature for the onset of δ→γ transformation reveals the larger prioraustenite grains resulted from the higher grains growth rate in the post solidification process.
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