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Metallurgical and Materials Transactions A

, Volume 31, Issue 9, pp 2275–2285 | Cite as

Mushy zone morphology during directional solidification of Pb-5.8 wt pct Sb alloy

  • L. Yu
  • G. L. Ding
  • J. Reye
  • S. N. Tewari
  • S. N. Ojha
Article

Abstract

The Pb-5.8 wt pct Sb alloy was directionally solidified with a positive thermal gradient of 140 K cm−1 at a growth speed ranging from 0.8 to 30 µm s−1, and then it was quenched to retain the mushy zone morphology. The morphology of the mushy zone along its entire length has been 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 has been 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.

Keywords

Material Transaction Directional Solidification Mushy Zone Interdendritic Region Hydraulic Radius 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2000

Authors and Affiliations

  • L. Yu
    • 1
  • G. L. Ding
    • 1
  • J. Reye
    • 1
  • S. N. Tewari
    • 1
  • S. N. Ojha
    • 2
  1. 1.the Chemical Engineering DepartmentCleveland State UniversityCleveland
  2. 2.Metallurgical Engineering DepartmentBanaras Hindu UniversityVaranasiIndia

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