Effective parameter for the selection of modifying agent for Al-Si alloy

H. S. Kang; W. Y. Yoon; K. H. Kim; M. H. Kim; Y. P. Yoon; I. S. Cho

doi:10.1016/j.msea.2006.02.363

Effective parameter for the selection of modifying agent for Al-Si alloy

H. S. Kang, W. Y. Yoon, K. H. Kim, M. H. Kim, Y. P. Yoon, I. S. Cho

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

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	https://doi.org/10.1016/j.msea.2006.02.363
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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title = "Effective parameter for the selection of modifying agent for Al-Si alloy",

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.",

keywords = "Al-Si alloy, Effective parameter, Miedema model, Modifying agent",

author = "Kang, {H. S.} and Yoon, {W. Y.} and Kim, {K. H.} and Kim, {M. H.} and Yoon, {Y. P.} and Cho, {I. S.}",

note = "Funding Information: The support of Korea Science and Engineering Foundation (R01-2003-00258) for research is gratefully acknowledged.",

year = "2007",

month = mar,

day = "25",

doi = "10.1016/j.msea.2006.02.363",

language = "English",

volume = "449-451",

pages = "334--337",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Effective parameter for the selection of modifying agent for Al-Si alloy

AU - Kang, H. S.

AU - Yoon, W. Y.

AU - Kim, K. H.

AU - Kim, M. H.

AU - Yoon, Y. P.

AU - Cho, I. S.

N1 - Funding Information: The support of Korea Science and Engineering Foundation (R01-2003-00258) for research is gratefully acknowledged.

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

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U2 - 10.1016/j.msea.2006.02.363

DO - 10.1016/j.msea.2006.02.363

M3 - Article

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VL - 449-451

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 -

Effective parameter for the selection of modifying agent for Al-Si alloy

Abstract

Keywords

ASJC Scopus subject areas

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