The Effect of Sr Modification and Holding Time on Si Morphology and Mechanical Properties of ETIAL 195 Alloy
Tarih
2015Yazar
ULUDAĞ, Muhammet
GEMİ, Lokman
ERYILMAZ, Muhammed Raşit
DIŞPINAR, Derya
Üst veri
Tüm öğe kaydını gösterÖzet
Hypereutectic Al-Si alloys are typically used in applications where wear
resistance is required. The primary factor that determines the wear
properties is the morphology of Si in these types of alloys. Pouring
temperature is one of the ways to control Si size and shape. On the
other hand, bifilm defects that may be present in the liquid can
significantly alter the morphology of Si acting as a heterogeneous
nucleant. Therefore in this work, castings were made at 800 degrees C
with varying holding time and the effects of bifilm on the Si morphology
was studied. Bifilm content was measured by Reduced Pressure Test and
image analysis was used to characterize Si morphology. In addition,
tensile tests were carried out to correlate Si morphology with
mechanical properties.
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