Interflake spacings and undercoolings in Al-Si irregular eutectic alloy
Küçük Resim Yok
Tarih
2004
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE SA
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Aluminium-silicon irregular eutectic alloy was melted in a graphite crucible in vacuum. This alloy was directionally solidified at a constant growth rate, V (8.3 mum/s) and at different temperature gradients, G (2.0-7.8 K/mm) and also with a constant G (7.8 K/mm) and different V (8.3-498.7 mum/s) in the Bridgman type directional solidification furnace. The interflake spacings, lambda(i), were measured from both transverse and longitudinal sections of the specimens. The relationships between interflake spacings, lambda(i) and solidification parameters V and G were obtained by linear regression analysis method. The variations of interflake spacings, lambda(i) with V, G and undercoolings, DeltaT(i), were investigated and the relationships between them were examined. Operating parameters phi and eta which reflect the spacing adjustment mechanism were obtained. lambda(i)(2)V, lambda(i) DeltaT(i), DeltaT(i)V(-a), lambda(i)(3)G and DeltaT(i)G(-b) values were determined by using lambda(i), V, G and DeltaT(i), values. The results obtained in this work have been compared with the eutectic theory and previous experimental results. (C) 2003 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Al-Si eutectic alloy, directional solidification, microstructure, operating parameters, uridercooling
Kaynak
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
369
Sayı
45323
