Evolution of Aluminium Melt Quality of A356 After Several Recycling

• Autorzy: Gursoy O. , Erzi E. , Tur K. , Dispinar D.

Identyfikatory

DOI

10.24425/afe.2020.133348

• Języki publikacji: EN

Abstrakty

EN

Recyclability is one of the great features of aluminium and its alloys. However, it has been typically considered that the secondary aluminium quality is low and bad. This is only because aluminium is so sensitive to turbulence. Uncontrolled transfer and handling of the liquid aluminium results in formation of double oxide defects known as bifilms. Bifilms are detrimental defects. They form porosity and deteriorate the properties. The detection and quantification of bifilms in liquid aluminium can be carried out by bifilm index measured in millimetres as an indication of melt cleanliness using Reduced Pressure Test (RPT). In this work, recycling efficiency and quality change of A356 alloy with various Ti additions have been investigated. The charge was recycled three times and change in bifilm index and bifilm number was evaluated. It was found that when high amount of Ti grain refiner was added, the melt quality was increased due to sedimentation of bifilms with Ti. When low amount of Ti is added, the melt quality was degraded.

Słowa kluczowe

EN

A356; recycling; melt quality; reduce pressure test; bifilm index

PL

A356; recykling; topnienie; próba ciśnieniowa

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 4
• Strony: 61--66
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wykr.

Twórcy

autor

Gursoy O.

• University of Padova, Italy

autor

Erzi E.

• Istanbul University-Cerrahpasa, Turkey

autor

Tur K.

• Atilim Univeristy, Turkey

autor

Dispinar D.

• Istanbul Technical University, Turkey

Bibliografia

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