Effect of Structural Modification on Corrosion Behavior of Hypo Eutectic Al-Si Alloy

Muhammad Mansoor; Muhammad Kamran Yaseen; Shaheed Khan

doi:10.4028/www.scientific.net/KEM.778.16

Paper Titles

Preface

Tribological Characteristics of Modified Hypo Eutectic Al-Si Alloy
p.3

Optimization of Spot Welding Parameters in Similar and Dissimilar Alloys AISI-321 and Inconel-X750 Alloys
p.9

Effect of Structural Modification on Corrosion Behavior of Hypo Eutectic Al-Si Alloy
p.16

Development of Lightweight Aluminum-Titanium Alloys for Aerospace Applications
p.22

Twisting of the Tail Rotor Shaft - A Case Study
p.28

Effect of Ag, In and AgIn Alloying Additions on Microstructure and Texture of Mg-3Al-1Zn Alloy during Multi-Pass Warm Rolling
p.33

Superplastic Behavior of Al-Mg-Mn Alloy: An Experimental & Numerical Investigation
p.45

Optimizing Cold Compression Deformation to Remove Residual Stresses in Die Forged Disc of Al-Mg-Si Alloy
p.53

HomeKey Engineering MaterialsKey Engineering Materials Vol. 778Effect of Structural Modification on Corrosion...

Effect of Structural Modification on Corrosion Behavior of Hypo Eutectic Al-Si Alloy

Abstract:

Al-Si eutectic cast alloys are widely used in aeronautical and automobile industries where significantly high strength, toughness and wear resistance are required. This class of cast alloys exhibit relatively low corrosion resistance in brine environments. The mechanical properties of the alloy system mainly depend upon the shape of Si rich eutectic phase, which mainly has acicular geometry. In present research, the effect of modified microstructure of 12 wt. % Si-Al alloy on corrosion behavior was studied. The needle like Si rich eutectic phase was modified to disperse spherical structure using rare earth metal halides. The corrosion rate and pitting behavior of modified and unmodified alloy were evaluated in 3.5% NaCl solution by general corrosion for calculated time. It was observed that the corrosion rate and pitting tendency of modified alloy had been appreciably reduced as compare to unmodified alloy. The improvement of corrosion properties were the attributes of changed morphology and distribution of Si rich eutectic phase.

By email View Pdf

You have full access to the following eBook

Read eBook

You might also be interested in these eBooks

Corrosion. Structural Metals and Alloys (2017-2018)

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 778)

Pages:

16-21

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.778.16

Citation:

Cite this paper

Online since:

September 2018

Authors:

Muhammad Mansoor*, Muhammad Kamran Yaseen, Shaheed Khan

Keywords:

Al-Si Eutectic Alloy, Pitting Corrosion Mechanism, Structural Modification

Export:

RIS, BibTeX

Permissions:

Creative Commons CC BY 4.0

Citation:

* - Corresponding Author

References

[1] M.D. Hanna, S.Z. Lu, A. Hellawell, Metal. Mater. Trans. A, 15 (1984) 459-469.

Google Scholar

[2] B.S. Pena, J.A. Lozano, Mat. Charact., 57 (2006) 218-226.

Google Scholar

[3] M. Mansoor, I.u. Salam, A. Tauqir, Effect of microstructural modifier on the morphology of silicon rich secondary phase and strain hardening behavior of eutectic Al-Si alloy, Mat. Sci. Eng.: IOP conference Series, 146 (2016).

DOI: 10.1088/1757-899x/146/1/012033

Google Scholar

[4] D.K. Owens, R.C. Wendt, Estimation of the surface free energy of polymers, J. App. Polym. Sci., 13 (1969) 1741–1747.

Google Scholar

[5] Vadims S. Zolotorevsky, Nikola A. Belov, Michael V. Glazoff, Casting Aluminum Alloys, Elsevier, Linacre House, Jordan Road, Oxford, UK, (2007).

DOI: 10.1016/b978-008045370-5.50007-9

Google Scholar

[6] E. McCafferty, Sequence of steps in the pitting of aluminum by chloride ions, Corr. Sci. 45 (2003) 1421-1438.

DOI: 10.1016/s0010-938x(02)00231-7

Google Scholar

[7] J.C. Bolge, Adhesion aspects of polymeric coatings, Plenum Press, New York,, (1983).

Google Scholar