Paper Titles
Microstructural Effects on the Fragmentation of High-Carbon Steel Cylindrical Shells under Explosive Loading
p.31
Steel Microstructure Prediction Mechanism Using Convolutional Neural Networks
p.39
Effect of Si Content on Property of Al-Si-Mg Strip Cast Using High Speed Twin Roll Caster
p.47
Microstructural and Mechanical Properties of Flash SPS WC-Co/AISI 304L Diffusion Bonded
p.53
Effect of Impurity on Casting of Al-25%Si Heat Sink with Thin Fins
p.59
Effect of Mold Lubricant on Flow Length of Al-Mg Alloy in Die Casting
p.65
Study on Cutting Edge Shape in Surface Processing with Indexable Non-Rotational Cutting Tool Using Damping Alloy
p.71
Development of a Finite Element Model for Thermal Analysis of FSW Butt Welding of AA2124/SiC/25p-T4 Aluminium Metal Matrix Composite
p.79
SEM and EDX Analysis of the Fracture Surface of the Submerged Friction Stir Processed EN AW 7075 Aluminum Alloy
p.91

Effect of Impurity on Casting of Al-25%Si Heat Sink with Thin Fins

Article Preview

Abstract:

Al-25%Si has excellent fluidity, which allows for the casting of heat sinks with thin and tall fins. During recycling, the content of impurities such as Fe, Cu, and Mg increases. The effect of these impurities on the fluidity of the alloy was investigated. The results show that the influence of impurity elements on fluidity is small. JIS ADC12 is a popular aluminum alloy that is more economical than Al-25%Si. Si was added to ADC12 to reach a 25% Si content, producing an economical Al-25%Si. The fluidity of Si-added ADC12 was almost the same as that of Al-25%Si. Heat sinks with fin heights of 50 mm, fin top thicknesses of 0.5 mm, and a draft angle of 0.5°, were cast using the Si-added ADC12. The molten metal filled the cavity, but solidification cracks occurred when the fin top thickness was 0.5 mm. When the fin top thickness was increased to 1 mm, solidification cracks did not occur.

You might also be interested in these eBooks
Building Materials, Steel and Alloys: Properties and Processing View Preview

Info:

Periodical:

Materials Science Forum (Volume 1163)

Pages:

59-64

DOI:

https://doi.org/10.4028/p-6Hv1Gf

Citation:

Cite this paper

Online since:

October 2025

Authors:

Hiroshi Fuse, Toshio Haga*, Hiizu Ochi, Hisaki Watari, Shinichi Nishida

Keywords:

Al-25%Si, Fluidity, Heat Sink, Impurity, Recycle, Thin Fin

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2025 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] H. Fuse, A. Hamada, M. Terao, T. Hag: J. JFS Vol. 90(2018), p.118.

Google Scholar

[2] T. Haga. H. Fuse: Metals Vol. 14 (2024), p.622

Google Scholar

[3] Available online: https://hishinuma.jp/menu/2013/09/hc50f.html

Google Scholar

[4] K. P. Keller: Design Advantages. ITherm'98. Sixth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (Cat. No.98CH36208). 27-30 May 1998.Seattle, WA, USA

DOI: 10.1109/ITHERM.1998.689527

Google Scholar

[5] H. S. Kou, J. J. Lee, C. Y. Lai: Int J Energy Power Eng. Vol.24 (2009), p.85

Google Scholar

[6] R. Charles, C. C. Wang: Heat Transfer Eng. Vol.24 (2003), p.18

Google Scholar

[7] C. Shengxiong, X. Daqing: Sens Mater. Vol. 30 (2018), p.907

Google Scholar

[8] T. Kobayashi, A. Ishikawa, R. Hashimoto, H. Kanematsu: The 3rd International Conference on Design Engineering and Science ICDES (2014), p.171

Google Scholar