4.5 Article

Quantifying MnS Inclusion Evolution Behaviors During 1473 K Heating in EH36 Shipbuilding Steel with Zr Addition

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SPRINGER
DOI: 10.1007/s11663-019-01581-5

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Funding

  1. National Natural Science Foundation of China [51622401, 51628402, 51861130361, 51861145312, 51850410522]
  2. Royal Society [RP12G0414]
  3. Research Fund for Central Universities [N172502004]
  4. National Key Research and Development Program of China [2016YFB0300602]
  5. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University [SKLSP201805]

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The evolution behaviors of MnS inclusions during 1473 K heating have been systematically investigated for EH36 shipbuilding steel with Zr addition. It is revealed that heating promotes MnS precipitation on the surfaces of ZrO2 inclusions. Further, quantified results by confocal scanning laser microscopy indicate that the area fraction of MnS first increases, reaches a maximum value, and undergoes a sharp decrease, which corresponds to the three unambiguously defined stages, namely, coarsening, Ostwald ripening, and crushing.

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