Effect of melt treatment on dendrite coherency of A357 alloys

Jian Feng Li; Jin Shan Li; Hong Chao Kou; Zhong Wei Chen; Rui Hu; Yi Chuan Wang; Heng Zhi Fu; Lian Zhou

Effect of melt treatment on dendrite coherency of A357 alloys

Jian Feng Li, Jin Shan Li, Hong Chao Kou, Zhong Wei Chen, Rui Hu, Yi Chuan Wang, Heng Zhi Fu, Lian Zhou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

Abstract

The dendrite coherency point of A357 alloy was determined after melt-treatment by double-thermocouple, and the solid volume fraction of coherency (f_s^coh) was calculated by thermal analysis. The effects of adding grain refiner Sr to the melt to modify the eutectic and the cooling rate on the increase of f₂^coh were investigated. The results show that the cooling rate and the addition of grain refiner significantly increase the solid volume fraction of coherency of the alloys, but the modification (Sr) has little effect on f_s^coh. The increase of cooling rate and the addition of grain refiner fine the grain and postpone the formation and growth of dendrite. The addition of Sr changes the morphology of Si, but has little effect on f_s^coh.

Original language	English
Pages (from-to)	470-475
Number of pages	6
Journal	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume	16
Issue number	3
State	Published - Mar 2006

Keywords

A357 alloy
Cooling rate
Dendrite coherency point
Double-thermocouple
Melt treatment

Cite this

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title = "Effect of melt treatment on dendrite coherency of A357 alloys",

abstract = "The dendrite coherency point of A357 alloy was determined after melt-treatment by double-thermocouple, and the solid volume fraction of coherency (fscoh) was calculated by thermal analysis. The effects of adding grain refiner Sr to the melt to modify the eutectic and the cooling rate on the increase of f2coh were investigated. The results show that the cooling rate and the addition of grain refiner significantly increase the solid volume fraction of coherency of the alloys, but the modification (Sr) has little effect on fscoh. The increase of cooling rate and the addition of grain refiner fine the grain and postpone the formation and growth of dendrite. The addition of Sr changes the morphology of Si, but has little effect on fscoh.",

keywords = "A357 alloy, Cooling rate, Dendrite coherency point, Double-thermocouple, Melt treatment",

author = "Li, {Jian Feng} and Li, {Jin Shan} and Kou, {Hong Chao} and Chen, {Zhong Wei} and Rui Hu and Wang, {Yi Chuan} and Fu, {Heng Zhi} and Lian Zhou",

year = "2006",

month = mar,

language = "英语",

volume = "16",

pages = "470--475",

journal = "Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals",

issn = "1004-0609",

publisher = "Central South University",

number = "3",

}

TY - JOUR

T1 - Effect of melt treatment on dendrite coherency of A357 alloys

AU - Li, Jian Feng

AU - Li, Jin Shan

AU - Kou, Hong Chao

AU - Chen, Zhong Wei

AU - Hu, Rui

AU - Wang, Yi Chuan

AU - Fu, Heng Zhi

AU - Zhou, Lian

PY - 2006/3

Y1 - 2006/3

N2 - The dendrite coherency point of A357 alloy was determined after melt-treatment by double-thermocouple, and the solid volume fraction of coherency (fscoh) was calculated by thermal analysis. The effects of adding grain refiner Sr to the melt to modify the eutectic and the cooling rate on the increase of f2coh were investigated. The results show that the cooling rate and the addition of grain refiner significantly increase the solid volume fraction of coherency of the alloys, but the modification (Sr) has little effect on fscoh. The increase of cooling rate and the addition of grain refiner fine the grain and postpone the formation and growth of dendrite. The addition of Sr changes the morphology of Si, but has little effect on fscoh.

AB - The dendrite coherency point of A357 alloy was determined after melt-treatment by double-thermocouple, and the solid volume fraction of coherency (fscoh) was calculated by thermal analysis. The effects of adding grain refiner Sr to the melt to modify the eutectic and the cooling rate on the increase of f2coh were investigated. The results show that the cooling rate and the addition of grain refiner significantly increase the solid volume fraction of coherency of the alloys, but the modification (Sr) has little effect on fscoh. The increase of cooling rate and the addition of grain refiner fine the grain and postpone the formation and growth of dendrite. The addition of Sr changes the morphology of Si, but has little effect on fscoh.

KW - A357 alloy

KW - Cooling rate

KW - Dendrite coherency point

KW - Double-thermocouple

KW - Melt treatment

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M3 - 文章

AN - SCOPUS:33646895505

SN - 1004-0609

VL - 16

SP - 470

EP - 475

JO - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

JF - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

IS - 3

ER -

Effect of melt treatment on dendrite coherency of A357 alloys

Abstract

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