Positive segregation as a function of buoyancy force during steel ingot solidification
We analyze theoretically and experimentally solute redistribution in the dendritic solidification process and positive segregation during solidification of steel ingots. Positive segregation is mainly caused by liquid flow in the mushy zone. Changes in the liquid steel velocity are caused by the tem...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2008-01-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | http://www.iop.org/EJ/abstract/1468-6996/9/4/045003 |
| _version_ | 1819259283910426624 |
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| author | Zarko Radovic, Nada Jaukovic, Milisav Lalovic and Nebojsa Tadic |
| author_facet | Zarko Radovic, Nada Jaukovic, Milisav Lalovic and Nebojsa Tadic |
| author_sort | Zarko Radovic, Nada Jaukovic, Milisav Lalovic and Nebojsa Tadic |
| collection | DOAJ |
| description | We analyze theoretically and experimentally solute redistribution in the dendritic solidification process and positive segregation during solidification of steel ingots. Positive segregation is mainly caused by liquid flow in the mushy zone. Changes in the liquid steel velocity are caused by the temperature gradient and by the increase in the solid fraction during solidification. The effects of buoyancy and of the change in the solid fraction on segregation intensity are analyzed. The relationships between the density change, liquid fraction and the steel composition are considered. Such elements as W, Ni, Mo and Cr decrease the effect of the density variations, i.e. they show smaller tendency to segregate. Based on the modeling and experimental results, coefficients are provided controlling the effects of chemical composition, secondary dendrite arm spacing and the solid fraction. |
| first_indexed | 2024-12-23T19:07:33Z |
| format | Article |
| id | doaj.art-f56a7e88792c4ea7af6b06a8e23db737 |
| institution | Directory Open Access Journal |
| issn | 1468-6996 1878-5514 |
| language | English |
| last_indexed | 2024-12-23T19:07:33Z |
| publishDate | 2008-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj.art-f56a7e88792c4ea7af6b06a8e23db7372022-12-21T17:34:33ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142008-01-0194045003Positive segregation as a function of buoyancy force during steel ingot solidificationZarko Radovic, Nada Jaukovic, Milisav Lalovic and Nebojsa TadicWe analyze theoretically and experimentally solute redistribution in the dendritic solidification process and positive segregation during solidification of steel ingots. Positive segregation is mainly caused by liquid flow in the mushy zone. Changes in the liquid steel velocity are caused by the temperature gradient and by the increase in the solid fraction during solidification. The effects of buoyancy and of the change in the solid fraction on segregation intensity are analyzed. The relationships between the density change, liquid fraction and the steel composition are considered. Such elements as W, Ni, Mo and Cr decrease the effect of the density variations, i.e. they show smaller tendency to segregate. Based on the modeling and experimental results, coefficients are provided controlling the effects of chemical composition, secondary dendrite arm spacing and the solid fraction.http://www.iop.org/EJ/abstract/1468-6996/9/4/045003segregationsteel ingotsolidificationbuoyancy effect |
| spellingShingle | Zarko Radovic, Nada Jaukovic, Milisav Lalovic and Nebojsa Tadic Positive segregation as a function of buoyancy force during steel ingot solidification Science and Technology of Advanced Materials segregation steel ingot solidification buoyancy effect |
| title | Positive segregation as a function of buoyancy force during steel ingot solidification |
| title_full | Positive segregation as a function of buoyancy force during steel ingot solidification |
| title_fullStr | Positive segregation as a function of buoyancy force during steel ingot solidification |
| title_full_unstemmed | Positive segregation as a function of buoyancy force during steel ingot solidification |
| title_short | Positive segregation as a function of buoyancy force during steel ingot solidification |
| title_sort | positive segregation as a function of buoyancy force during steel ingot solidification |
| topic | segregation steel ingot solidification buoyancy effect |
| url | http://www.iop.org/EJ/abstract/1468-6996/9/4/045003 |
| work_keys_str_mv | AT zarkoradovicnadajaukovicmilisavlalovicandnebojsatadic positivesegregationasafunctionofbuoyancyforceduringsteelingotsolidification |