Details

Autor(en) / Beteiligte

• YU, L
• DING, G. L
• REYE, J
• OJHA, S. N
• TEWARI, S. N

Titel

Mushy zone morphology during directional solidification of Pb-5.8 Wt Pct Sb alloy

Ist Teil von

• Metallurgical and materials transactions. A, Physical metallurgy and materials science, 2000-09, Vol.31 (9), p.2275-2285

Ort / Verlag

New York, NY: Springer

Erscheinungsjahr

2000

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• The Pb-5.8 wt pct Sb alloy was directionally solidified with a positive thermal gradient of 140 K/cm at a growth rate ranging from 0.8 to 30 microns/s, and then it was quenched to retain the mushy zone morphology. The morphology of the mushy zone along its entire length was characterized by using a serial sectioning and three-dimensional image reconstruction technique. Variation in the cellular/dendritic shape factor, hydraulic radius of the interdendritic region, and fraction solid along the mushy zone length were studied. A comparison with predictions from theoretical models indicates that convection remarkably reduces the primary dendrite spacing while its influence on the dendrite tip radius is not as significant. (Author)