Directional solidification of aluminium - copper alloys


Gunduz M. , ÇADIRLI E.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, cilt.327, ss.167-185, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 327 Konu: 2
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0921-5093(01)01649-5
  • Dergi Adı: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
  • Sayfa Sayıları: ss.167-185

Özet

Directional solidification experiments have been carried out on different Al-Cu alloys as a function of solidification parameters, temperature gradient G, growth rate V, and composition C-0. The specimens were solidified under steady state conditions with a constant temperature gradient (7.4 K mm(-1)) at a wide range of growth rates (9-490 m s(-1)) and with a constant growth rate of 9.5 mum s(-1) at a wide range of temperature gradients (1.0-7.4 K mm(-1)). Microstructural parameters, the primary dendrite arm spacing lambda(1), secondary dendrite arm spacing lambda(2), dendrite tip radius R, mushy zone depth d were measured and expressed as functions of solidification parameters, G, V and C-0 by using a linear regression analysis. The results were in good agreement with previous experimental work and current theoretical models suggested for dendritic growth. (C) 2002 Elsevier Science B.V. All rights reserved.