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Öz

Structural properties of Al-Si-Cu cast alloys depend on α-Al phase and intermetallics. Commercial ETIAL 180 aluminum alloy was used in this study. ETIAL 180 alloy with addition of 0.2-0.40.6% Sn and 0.4-0.6-0.7% Mg was investigated. Primary phase and intermetallics was examined in detail by analyzing SEM and mapping. It was observed that the intermetallic compounds were coarse with Sn and the variations in region of centre and edge of intermetallic phase formed due to segregation. Mg addition increased the Mg2Si phase in microstructure

Anahtar Kelimeler

• ETIAL 180 alloy, Al-Si-Cu alloys, SEM

ETIAL 180 ALÜMİNYUM ALAŞIMINA İLAVE EDİLEN Mg ve Sn ELEMENTLERİNİN İNTERMETALİK FAZLARA ETKİSİ - THE INFLUENCE OF Sn AND Mg CONTENTS ON THE INTERMETALLIC PHASES OF ETIAL 180 ALLOY

Öz

ETIAL 180 ALÜMİNYUM ALAŞIMINA İLAVE EDİLEN Mg ve Sn ELEMENTLERİNİN İNTERMETALİK FAZLARA ETKİSİ

Al-Si-Cu döküm alaşımlarının yapısal özellikleri α-Al fazı ve intermetaliklere bağlıdır. Bu çalışmada, özellikle otomotiv endüstrisinde yaygın olarak kullanılan ETIAL 180 alüminyum alaşımı kullanılmıştır. ETIAL 180 alüminyum alaşımına ağırlıkça % 0.2-0.4-0.6 Sn ve ağırlıkça % 0.4-0.6-0.7 Mg ilavesinin etkileri araştırılmıştır. Oluşan intermetalik yapıları incelemek üzere SEM kullanılarak EDS analizi yapılmış ve bölgesel haritalama yapılarak ilave edilen elementlerin etkileri detaylı olarak incelenmiştir. İntermetalik bileşiklerin Sn ilavesi ile kabalaştığı ve intermetalik fazda merkez ve kenar bölgesindeki değişimlerin segregasyondan dolayı oluştuğu gözlemlenmiştir. Mg ilavesinin artmasıyla ile mikro yapıdaki Mg₂Sifazı artmaktadır.

THE INFLUENCE OF Sn AND Mg CONTENTS ON THE INTERMETALLIC PHASES OF ETIAL 180 ALLOY

: Structural properties of Al-Si-Cu cast alloys depend on α-Al phase and intermetallics. Commercial ETIAL 180 aluminum alloy was used in this study. ETIAL 180 alloy with addition of 0.2-0.4- 0.6% Sn and 0.4-0.6-0.7% Mg was investigated. Primary phase and intermetallics was examined in detail by analyzing SEM and mapping. It was observed that the intermetallic compounds were coarse with Sn and the variations in region of centre and edge of intermetallic phase formed due to segregation. Mg addition increased the Mg2Si phase in microstructure.

 

 

Anahtar Kelimeler

• ETİAL 180 alaşımı, Al-Si-Cu alaşımları, SEM

Kaynakça

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