Investigation of the effect of composition on microhardness and determination of thermo-physical properties in the Zn-Cu alloys
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCI LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Zinc-copper of (99.99%) high purity alloys were directionally solidified upward with different compositions, C-o, Zn-(0.7,1.5, 2.4 and 7.37) wt.% Cu under two different solidification conditions (G = 3.85 K/mm, V = 0.0083 mm/s and G = 8.70 K/mm, V = 0.436 mm/s) using a Bridgman type directional solidification apparatus. The measurements of microhardness of directionally solidified samples were made by using a microhardness test device. The dependence of microhardness (HV) on composition was analyzed. According to these results, it has been found that the values of HV increase with the increasing Cu content (C-o). Variation of electrical resistivity (rho) and electrical conductivity (sigma) with the temperature were also measured by using a standard d.c. four-point probe technique. The enthalpy of fusion (Delta H) and specific heat (Cp) of the Zn-Cu alloys were determined from heating curve during the transformation from solid to liquid phase by using differential scanning calorimeter (DSC). (C) 2010 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Electrical resistivity, Microhardness, Microstructure
Kaynak
MATERIALS & DESIGN
WoS Q Değeri
Q1
Scopus Q Değeri
N/A
Cilt
32
Sayı
2
