Paper Titles
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Effects of Heat Treatments on Microstructure of AM50 Magnesium Alloy
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Homogeneity of Grain Refinement of Aluminum Alloy with Compressive Torsion Processing
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Effect of Alloying Elements on Mechanical Properties for A356 Casting Alloy
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Research and Development of Mg-Al-Sr Alloys
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Preparation of Mg-Sr Alloy Using Electrochemical Reduction
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Relationship between Tensile Deformation and Crystallographic Orientation of Grains in the Balanced Al-Mg2 Si Alloys
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Effect of Alloying Elements on Mechanical Properties for A356 Casting Alloy

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Abstract:

A quantitative study of the interactions between microstructural features such as secondary dendrite arm spacing (DAS), eutectic structure and fatigue behavior of two Al-Si-Mg casting alloys with silicon contents of 7% and 10% respectively, has been conducted. In the condition of minimizing casting defects, the influence of microstructural features on the mechanical performance becomes more pronounced. Depending on the magnesium content affecting the strength of the matrix, the tensile properties were changed upon experimental conditions; the tensile strength was increased with magnesium content, whereas the elongation was increased in the reverse case. The increase of both of high cycle fatigue and low cycle fatigue lives with decreasing the secondary dendritic arm spacing is observed, mainly due to homogeneous deformation owing to the fine size of eutectic silicon and Fe intermetallic particles. The fatigue dynamometer of a diesel cylinder head shows the same tendency with the results of specimen fatigue tests with microstructures.

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Periodical:

Advanced Materials Research (Volumes 26-28)

Pages:

111-114

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.26-28.111

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Online since:

October 2007

Authors:

Chang Yeol Jeong, Chang Seog Kang, Jae Ik Cho

Keywords:

A356 Aluminum Alloy, Dendrite Arm Spacing, High Cycle Fatigue (HCF), Low Cycle Fatigue

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] P. K. Rohatgi: J. Mater. Sci., Vol. 29 (1994), p.5975.

Google Scholar

[2] J. U. Ejiofor and R. G. Reddy: JOM, Vol. 49 (1997), p.31.

Google Scholar

[3] K. Sato, M. Saito, K. Yasunaga, K. Kiyama and T. Idegomori: J. Jpn. Inst. Light Met., Vol. 50 (2000), p.121.

Google Scholar

[4] F. Langmayr and F. Zieher: VDI-Ber, Vol. 1813 (2004), p.227.

Google Scholar

[5] J. Hadler, S. Flor and C. Heikel: VDI-Ber, Vol. 1830 (2005), p.285.

Google Scholar

[6] J. M. Boileau, J. W. Zindel and J. E. Allison: SAE 970019 (1997), p.61.

Google Scholar

[7] K. Mizuno, E. Fan, S. Furutani, S. Yokota and T. Fukusako: 輕金屬, Vol. 43 (1993), p.618.

Google Scholar

[8] Q. G. Wang, D. Apelian and D. A. Lados: J. Light Met., Vol. 1 (2001), p.85.

Google Scholar

[9] W. E. Frazier and M. Koczak, in: Dispersion Strengthening Al Alloys, edited by Y. W. Kim and W. M. Griffith, Proc. Six-Session Symp., TMS Annual Meeting, Phoenix Arizona, TMS (1988), p.537.

Google Scholar