Effect of Sr and Ti Addition on the Corrosion Behaviour of Al-7Si-0.3Mg Alloy

• Autorzy: Uludag M. , Kocabas M. , Dispinar D. , Cetin R. , Consever N.

Identyfikatory

DOI

10.1515/afe-2017-0063

• Języki publikacji: EN

Abstrakty

EN

In the present study, the corrosion behaviour of A356 (Al-7Si-0.3Mg) alloy in 3.5% NaCl solution has been evaluated using cyclic/potentiodynamic polarization tests. The alloy was provided in the unmodified form and it was then modified with AlTi5B1 for grain refinement and with AlSr15 for Si modifications. These modifications yield to better mechanical properties. Tensile tests were performed. In addition, bifilm index and SDAS values were calculated and microstructure of the samples was investigated. As a result of the corrosion test, the Ecorr values for all conditions were determined approximately equal, and the samples were pitted rapidly. The degassing of the melt decreased the bifilm index (i.e. higher melt quality) and thereby the corrosion resistance was increased. The lowest corrosion rate was founded at degassing and as-received condition (3.9x10-3 mm/year). However, additive elements do not show the effect which degassing process shows.

Słowa kluczowe

EN

A356 alloy; bifilm index; grain refinement; modification; electrochemical corrosion

PL

stop A356; ziarna; modyfikacja; korozja elektrochemiczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 2
• Strony: 125--130
• Opis fizyczny: Bibliogr. 27 poz., fot., rys., tab.

Twórcy

autor

Uludag M.

• Selcuk University, Faculty of Engineering, Metallurgical and Materials Eng. Dept., Konya-Turkey

autor

Kocabas M.

• Yıldız Technical University, Faculty of Chemistry-Metallurgy, Metallurgical and Materials Eng. Dept., Istanbul-Turkey

autor

Dispinar D.

• Istanbul University, Faculty of Engineering, Metallurgical and Materials Eng. Dept., Istanbul-Turkey

autor

Cetin R.

• Halic University, Faculty of Engineering, Industrial Eng., Istanbul-Turkey

autor

Consever N.

• Halic University, Faculty of Engineering, Industrial Eng., Istanbul-Turkey

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)