Effect of lattice disregistry on the heterogeneous nucleation catalysis of liquid steel

PAN Ning; SONG Bo; ZHAI Qi-jie; WEN Bin

doi:10.13374/j.issn1001-053x.2010.02.020

Volume 32 Issue 2

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PAN Ning, SONG Bo, ZHAI Qi-jie, WEN Bin. Effect of lattice disregistry on the heterogeneous nucleation catalysis of liquid steel[J]. Chinese Journal of Engineering, 2010, 32(2): 179-182,190. doi: 10.13374/j.issn1001-053x.2010.02.020

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PAN Ning, SONG Bo, ZHAI Qi-jie, WEN Bin. Effect of lattice disregistry on the heterogeneous nucleation catalysis of liquid steel[J]. Chinese Journal of Engineering, 2010, 32(2): 179-182,190. doi: 10.13374/j.issn1001-053x.2010.02.020

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Effect of lattice disregistry on the heterogeneous nucleation catalysis of liquid steel

doi: 10.13374/j.issn1001-053x.2010.02.020

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

Received Date: 2009-05-31

Abstract

Abstract

Planar disregistries between various substrates and nucleated phases during liquid steel solidification were calculated. The relation between lattice disregistry and heterogeneous nucleation catalysis of liquid steel was analyzed. The results show that the smaller the disregistry is, the more effective the substrate is for promoting nucleation. The logarithm of undercooling is approximately linear with the disregistry between the substrate and the nucleated phase. A substrate is presumed as the highly effective nucleus for promoting nucleation if the disregistry between the substrate and the nucleated phase is lower than 8%.
- liquid steel,
- heterogeneous nucleation,
- disregistry,
- undercooling