Journal
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
Volume 52, Issue 3, Pages 1574-1581Publisher
SPRINGER
DOI: 10.1007/s11663-021-02124-7
Keywords
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Funding
- Graduate Scientific Research and Innovation Foundation of Chongqing, China [CYB19002]
- National Natural Science Foundation of China [51574050]
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This study systematically investigated the microstructure and thermal conductivity of CaO-Al2O3-based mold slags. It was found that the Al-O structure plays a crucial role in CA-based mold slags and the thermal conductivity changes with the C/A ratio. The thermal conductivity of molten CASMN slag is affected by the combination of short- and medium-range order structures.
The microstructure and thermal conductivity of the CaO-Al2O3-based (CA-based) mold slags are crucial for casting high aluminum steel. Herein, the microstructure and thermal conductivity of the CA-based mold slags were systematically investigated by using molecular dynamics (MD). Moreover, the effects of the CaO/Al2O3 mole (C/A) ratio and CaO/SiO2 mole (C/S) ratio on the microstructure and thermal conductivity of CA-based mold slags were studied. The results showed that the Al-O structure plays a skeleton role in the CA-based mold slags. The thermal conductivity of molten CA-based mold slags increases first and then decreases with increasing C/A ratio. The thermal conductivity of molten CaO-Al2O3-SiO2-MgO-Na2O (CASMN) slag is affected by the combination of short- and medium-range order structures.
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