Change in Porosity of A356 by Holding Time and Its Effect on Mechanical Properties
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In most of the practical casting operations, it is important to be able to cast large number of part with one single melt. Therefore, when quantity of the charge and melting crucible is increased, during casting process, the liquid is led to settle for a long period of time. In this work, 10kg charge of A356 was melted at 750 degrees C and held for 240min. A sand mold with different thickness was cast at 30, 60, 120, and 240min of holding time of the liquid, before and after degassing conditions. Melt quality was measured by reduced pressure test, and pore size and number were measured at each cast part. A correlation between bifilm index and tensile properties was established. It was found that melt quality was decreased with increased holding time and pore formation was enhanced linearly. Additionally, mechanical properties of the alloy were decreased with decreased melt quality and increased pore formation due to holding time of the liquid.
Açıklama
Anahtar Kelimeler
A356, degassing, holding time, mechanical properties, melt quality
Kaynak
Journal Of Materials Engineering And Performance
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
27
Sayı
10
