TY  - JOUR
T1  - A356 alüminyum alaşımının dökümünde katılaşma zamanı ve Nb ilavesinin mikroyapıya etkisinin incelenmesi
TT  - Investigation of the effect of solidification time and Nb addition on the microstructure of A356 aluminum alloy castings
AU  - Tigli, Ahmet
AU  - Yalçın, Önder
AU  - Tokatlı, Mehmet
AU  - Çolak, Murat
PY  - 2024
DA  - June
Y2  - 2024
DO  - 10.17714/gumusfenbil.1336800
JF  - Gümüşhane Üniversitesi Fen Bilimleri Dergisi
PB  - Gümüşhane Üniversitesi
WT  - DergiPark
SN  - 2146-538X
SP  - 479
EP  - 492
VL  - 14
IS  - 2
LA  - tr
AB  - Alüminyum alaşımları hafiflik, korozyon direnci, elektrik ve ısı iletkenliğinin yüksek olması yüksek dayanım, sünek olması gibi özelliklerinde dolayı oldukça önemli bir mühendislik malzemesidir. Bu sebeple; otomotiv, havacılık, savunma, uzay endüstrisi, makine imalat, gıda endüstrisi gibi birçok alanda yaygınca kullanım bulmaktadır. Özellikle otomotiv sanayi ve yüksek teknoloji gereksinimi olan birçok sektörde kullanımı artmakla birlikte kalite gereksinimleri de artmaktadır. Alüminyum döküm alaşımlarından kalite beklentisindeki artışa bağlı olarak farklı alaşım elementi ilaveleri ile dökümler yapılması ve üretimde yeni teknoloji kullanımları üzerinde çalışmalar devam etmektedir. Bu çalışmada A356 alüminyum döküm alaşımına %0.03, %0.06 ve %0.1 Niyobyum ilavesinin değişen kesitler içeren kokil kalıba dökümünde mikroyapı üzerindeki etkileri incelenecektir. Çalışmada ergitme, sıvı metal temizleme, kokil kalıba döküm, metalografik numune hazırlama, mikroyapı inceleme ve imaj analiz teknikleri kullanılmıştır. Sonuçlar incelediğinde katılaşma zamanına ve Nb ilave miktarına bağlı olarak döküm mikro yapılarında değişimler olduğu gözlenmiştir.
KW  - A356 alüminyum döküm
KW  - Katılaşma zamanı
KW  - Mikroyapı
KW  - Nb ilavesi
N2  - Aluminum alloys are very important engineering materials due to their lightness, corrosion resistance, high electrical and thermal conductivity, high strength, and ductility. Therefore; It is widely used in many areas such as automotive, aviation, defense, space industry, machinery manufacturing, and food industry. The demand for high-quality aluminum products is also growing as their applications increase. This study aims to explore the influence of adding 0.03%, 0.06%, and 0.1% niobium to the A356 aluminum casting alloy on the resulting microstructure. The investigation focused on permanent step mold casting with different cross-sectional profiles. In the study, melting, liquid metal cleaning (lance degassing), permanent mold casting, metallographic sample preparation, microstructure examination, and image analysis techniques were used. It was observed that SDAS and SDAL of A356 increased with decreasing cooling rate. With the addition of 0.1% Nb, the dimensions of SDAS demonstrated a reduction when contrasted with the as-received A356 castings.
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UR  - https://doi.org/10.17714/gumusfenbil.1336800
L1  - https://dergipark.org.tr/tr/download/article-file/3304401
ER  -