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 | 448-451 |
| DOIs | |
| Publication status | Published - 2007 Mar 25 |
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Keywords
- Al-Si alloy
- Effective parameter
- Miedema model
- Modifying agent
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Effective parameter for the selection of modifying agent for Al-Si alloy. / Kang, H. S.; Yoon, Wooyoung; Kim, Kwon Hee; Kim, M. H.; Yoon, Y. P.; Cho, I. S.
In: Materials Science and Engineering A, Vol. 448-451, 25.03.2007, p. 334-337.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effective parameter for the selection of modifying agent for Al-Si alloy
AU - Kang, H. S.
AU - Yoon, Wooyoung
AU - Kim, Kwon Hee
AU - Kim, M. H.
AU - Yoon, Y. P.
AU - Cho, I. S.
PY - 2007/3/25
Y1 - 2007/3/25
N2 - 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.
AB - 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.
KW - Al-Si alloy
KW - Effective parameter
KW - Miedema model
KW - Modifying agent
UR - http://www.scopus.com/inward/record.url?scp=33847250863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847250863&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2006.02.363
DO - 10.1016/j.msea.2006.02.363
M3 - Article
AN - SCOPUS:33847250863
VL - 448-451
SP - 334
EP - 337
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -