Effects of alloying elements on thermal conductivity of pearlitic gray cast iron
| Autor: | Gui-quan Wang, Yanxiang Li, Zhong-li Liu, Yuan Liu, Huawei Zhang, Xiang Chen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Scattering Metallurgy 0211 other engineering and technologies Metals and Alloys 02 engineering and technology Conductivity engineering.material Microstructure 01 natural sciences Quantitative model Condensed Matter::Materials Science Thermal conductivity Mechanics of Materials Ferrite (iron) 0103 physical sciences Ultimate tensile strength Materials Chemistry engineering Cast iron 021102 mining & metallurgy |
| Zdroj: | Journal of Iron and Steel Research International. 26:1022-1030 |
| ISSN: | 2210-3988 1006-706X |
| Popis: | A quantitative model is proposed to describe the thermal conductivity of alloyed pearlitic gray cast iron. The model is built by combining the computational thermodynamics and effective medium theory. The volume fractions and concentrations of precipitated phases in as-cast structure are estimated in consideration of partial and para-equilibrium. The conductivity of alloyed ferrite is calculated, taking into account the electronic and vibrational contributions of alloying elements. The model provides a good agreement with microstructure analysis and measured thermal conductivity. The influence of common alloying elements was discussed from the viewpoint of precipitation of phases and scattering of alloying atoms. This model can also be used as a numerical tool for designing the pearlitic gray cast irons with high thermal conductivity and high tensile strength. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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