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    5th International Conference on Advances in Solidification Processes (ICASP-5) 5th International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining (CSSCR-5)

    17–21 Jun 2019
    IMLAUER HOTEL PITTER SALZBURG
    Europe/Vienna timezone

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    Session

    Peritectic growth

    1
    20 Jun 2019, 10:30
    IMLAUER HOTEL PITTER SALZBURG

    IMLAUER HOTEL PITTER SALZBURG

    Rainerstraße 6, 5020 Salzburg, Austria

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    1. 176. INVESTIGATION USING 4D-CT OF MASSIVE-LIKE TRANSFORMATION FROM THE δ TO γ PHASE DURING AND AFTER δ-SOLIDIFICATION IN CARBON STEELS
      Hideyuki Yasuda (Kyoto University)
      20/06/2019, 10:30
      Highlight
      For a long time, the γ phase in metallic alloys has seemed to be produced through a peritectic reaction between the δ and liquid phases. However, direct observations have shown that a massive-like transformation, in which the δ phase transforms into the γ phase in the solid state, is dominant during or after solidification of the δ phase in carbon steels. To characterize such massive-like...
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    2. 232. APPLICATION OF A CONCENTRIC SOLIDIFICATION TECHNIQUE TO STUDY EARLY SOLIDIFICATION PHENOMENA PERTINENT TO THE CONTINUOUS CASTING OF STEEL
      Rian Dippenaar (School of Mechanical, Materials and Mechatronic and Biomedical Engineering, University of Wollongong)
      20/06/2019, 10:50
      Oral Presentation
      We have used a concentric solidification technique to study events occurring in the early stages of solidification during the continuous casting of steel. We have found that the major factors contributing to crack susceptibility are the fraction of δ-phase present prior to the occurrence of the peritectic reaction; the rate at which the δ-to-γ interface propagates and the extent of...
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    3. 160. PHASE-FIELD SIMULATIONS OF SOLID/LIQUID INTERFACE MORPHOLOGY AND THERMODYNAMIC PARAMETERS EVALUATION IN PERITECTIC STEELS FOR THE CONCENTRIC SOLIDIFICATION TECHNIQUE USING HIGH TEMPERATURE LASER SCANNING CONFOCAL MICROSCOPE (HTLSCM)
      Dasith Deshan Liyanage (School of Mechanical, Materials and Mechatronic Engineering University of Wollongong, NSW 2522, Australia)
      20/06/2019, 11:10
      Oral Presentation
      We have used high temperature laser-scanning confocal microscopy by utilizing a concentric solidification technique to observe in-situ and in real time solidification events and high-temperature microstructural development, with a special emphasis on high temperature phase transformations. However, the solidification and subsequent solid-state transformation kinetics, on both heating and...
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    4. 122. IMPACT OF UNEQUAL PHASE BOUNDARY ENERGIES ON THE PERITECTIC REACTION STUDIED BY PHASE-FIELD SIMULATION
      Janin Eiken (Access e. V.)
      20/06/2019, 11:30
      Oral Presentation
      Peritectic transitions - characterized by the formation of a secondary phase from decomposition of the primary phase and the melt - are very common in the solidification of metallic alloys. During the peritectic reaction, all three phases are in direct contact, thus forming a trijunction. Already in 1979, Hillert [1] emphasized the important role of the junction force balance in the peritectic...
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    5. 127. OPTIMIZATION STRATEGIES FOR IDENTIFYING THE CONTROLLING MECHANISM FOR SOLID-STATE TRANSFORMATION IN FeCrNi DURING RAPID SOLIDIFICATION
      Douglas M. Matson (Tufts University)
      20/06/2019, 11:50
      Oral Presentation
      Retained free energy drives the transformation from metastable to stable phase during double recalescence of steel alloys. Statistical methods were used to identify the mechanism controlling cluster growth based on the principle of microstructural reversibility. Application of the coefficient of determination during optimization procedures showed that an extrinsic mechanism controls...
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