| Autor: |
Liu Hongbo, Xie Rongyuan, Li Min, Zhang Caidong, Yao Hongyong, Tian Zhiqiang, Yang Haibin, Liu Zhanli, Wang Qiang, Kang Ju |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
High Temperature Materials and Processes, Vol 42, Iss 1, Pp pp. 7-11 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2191-0324 |
| DOI: |
10.1515/htmp-2022-0257 |
| Popis: |
The number density, size and composition of inclusions in U75V heavy rail steel during ladle furnace (LF)–RH refining process were studied by an Aztec-Feature inclusion automatic software which equipped with a field emission microscope. The results showed that the MnO–SiO2–Al2O3-type inclusions were the main inclusions at LF start. The MnO–SiO2–Al2O3-type inclusions were transformed into the CaO–SiO2–Al2O3-type inclusions during the LF refining process because of the Ca and Al elements which were brought by ferroalloy. At the RH start stage, the main inclusions were CaO–SiO2–Al2O3-type inclusions with low melting temperature and CaO–MgO–Al2O3-type inclusions with high melting temperature in the sample. And, the CaO–MgO–Al2O3-type inclusions were obviously removed during RH vacuum treatment. The average compositions of CaO–SiO2–Al2O3-type inclusions had no obvious change from RH vacuum holding for 15 min, RH vacuum break to RH soft blowing. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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