Abstract
To select effective modifying agent for Al-Si alloys, in addition to conventional parameters such as the crystal structure and lattice constant, the mixing enthalpy, which was calculated by the Miedema model, was newly considered. The large negative value of mixing enthalpy was counted as a new parameter. According to the result of calculation, four elements, including Sr, Y, Sm and Gd, which have large negative mixing enthalpies with Si, were selected as modifying agent for eutectic Si crystals. It was observed that these elements result in the modification of the eutectic Si crystals and that the eutectic depression of the modified alloy is larger than 6 K.
| Original language | English |
|---|---|
| Pages (from-to) | 334-337 |
| Number of pages | 4 |
| Journal | Materials Science and Engineering A |
| Volume | 449-451 |
| DOIs | |
| Publication status | Published - 2007 Mar 25 |
Keywords
- Al-Si alloy
- Effective parameter
- Miedema model
- Modifying agent
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Cite this
Kang, H. S., Yoon, W. Y., Kim, K. H., Kim, M. H., Yoon, Y. P., & Cho, I. S. (2007). Effective parameter for the selection of modifying agent for Al-Si alloy. Materials Science and Engineering A, 449-451, 334-337. https://doi.org/10.1016/j.msea.2006.02.363