Determination of Microstructure, Mechanical, Electrical and Thermal Properties of The Directionally Solidified Al-Si-Co Ternary Alloy
[ X ]
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Fed Sao Carlos, Dept Engenharia Materials
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this work, Al-12.6Si-2Co (wt.%) ternary alloy of near eutectic composition was directionally solidified at a constant temperature gradient (G=7.60 K/mm) in a wide range of growth rates (V=8.35-166.30 mu m/s) using by Bridgman type growth apparatus. Flake spacing (lambda), microhardness (HV), tensile stress (sigma) and electrical resistivity (rho) were measured from directionally solidified samples. The dependence of flake spacing, microhardness, tensile stress and electrical resistivity on growth rate (V) was also determined by statistical analysis. According to these results, it has been found that for increasing values of V, the values of HV; sigma and rho increase. Variations of electrical resistivity (rho) for casting Al-Si-Co alloy were also measured at the temperature in range 300-500 K. The enthalpy of fusion (Delta H) for the Al-Si-Co alloy was determined by differential scanning calorimeter (DSC) from heating trace during the transformation from solid to liquid. The results obtained in this work were compared with the previous similar experimental results obtained for binary and ternary alloys.
Açıklama
Anahtar Kelimeler
Al-Si-Co alloy, Microstructures, Microhardness, Tensile Stress Electrical resistivity
Kaynak
Materials Research-Ibero-American Journal of Materials
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
19
Sayı
1
