Solidification of Highly Undercooled Liquid Droplets.

Abstract

The rapid solidification of highly undercooled liquid alloys in fine droplet form has been studied under controlled conditions by thermal analysis, x-ray diffraction and metallographic examination. Droplet undercooling is affected by processing variables such as particle size, melt superheat and cooling rate, but the undercooling limit is often set by a catalysis at the droplet surface. By varying the droplet coating and nucleation site the development of solidification microstructure and the effect of recalescence thermal history has been examined at controlled undercooling levels including the hypercooling range.

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Document Details

Document Type
Technical Report
Publication Date
Jul 05, 1984
Accession Number
ADA143892

Entities

People

  • John H. Perepezko

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Emulsions
  • Engineering
  • Heat Energy
  • Latent Heat
  • Liquid Metals
  • Materials
  • Measurement
  • Military Research
  • Mixtures
  • Phase Diagrams
  • Solid Solutions
  • Students
  • Thermal Analysis
  • Thermodynamics
  • Transitions
  • X Rays
  • X-Ray Diffraction

Readers

  • Combustion and Flow Dynamics.
  • Powder metallurgy of Titanium alloys.