Formation of Equiaxed Crystals by Complex Inclusions during Solidification of Advanced High Strength Steel

作者: Joo Hyun Park , Jun Seok Park , Changhee Lee

DOI: 10.1007/978-3-319-48764-9_82

关键词:

摘要: The effect of Mg-Ti deoxidation on the solidification structure advanced high strength steel was investigated by observing not only but also inclusion particles using SEM-EDS. precipitation TiN, MgO and ‘TiN-MgO’ formation fine equiaxed crystals evaluated. composition inclusions changed as in order ➔ ‘MgO(core)+TiN(surface)’ Ti2O3 reaction time, which corresponds to change ‘columnar columnar.’ This could be understood from concept lattice disregistry between delta iron (3.97%), TiN (3.91%), (18.9%). However, even with very low MgO, itself did work an effective catalyst, indicating that there is another criterion for determining a good catalyst. mechanism surface schematically described. feasible although content Ti N lower than equilibrium solubility product TiN. Because (0.05%), energetically more favorable.

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