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Mushy Zone Morphology During Directional Solidification of Pb-5.8 Wt Pct Sb Alloy

  • L. Yu
  • , G. L. Ding
  • , J. Reye
  • , S. N. Ojha
  • Cleveland State University
  • Banaras Hindu University

Research output: Contribution to journal › Article › peer-review

Abstract

The Pb-5.8 wt pet 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 mu m 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.

Original languageAmerican English
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume31
DOIs
StatePublished - Sep 1 2000
Externally publishedYes

Disciplines

  • Materials Science and Engineering

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