Dendritic growth in an aluminum-silicon alloy


kaya h. , ÇADIRLI E. , Guenduez M.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, cilt.16, ss.12-21, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 16 Konu: 1
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1007/s11665-006-9002-2
  • Dergi Adı: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
  • Sayfa Sayıları: ss.12-21

Özet

Unidirectional solidification experiments have been carried out on an Al-3 wt.% Si alloy as a function of temperature gradient, G and growth rate, V. The samples were solidified under steady-state conditions with a constant growth rate of 8.20 mu m/s at different temperature gradients (1.97-6.84 K/mm) and with a constant temperature gradient (6.84 K/mm) at different growth rates (8.20-492.76 mu m/s). Microstructure parameters (primary dendrite arm spacing, lambda(1), secondary dendrite arm spacing, lambda(2), dendrite tip radius, R and mushy zone depth, d) were measured as a function of temperature gradient and growth rate. The experimental results have been compared with the current theoretical models and similar experimental works.