The effect of mold precession on channel and macro-segregation in ammonium chloride-water analog castings View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1982-09

AUTHORS

Alex Sample, Angus Hellawell

ABSTRACT

Analog castings of two geometrical forms have been studied to observe the effect of continuously changing the direction of gravitational force on patterns of segregation. Molds of slab form, cooled on one side, and of cylindrical form, cooled at the base, were rotated axially at rates from 0 to 10 rpm with the axis of rotation tilted from 0 to 30 deg to the vertical: the development of “A” channel segregation in the former and of “freckel” channels in the latter were recorded photographically, while changes in bulk liquid concentration were followed over time periods up to one hour. It was observed that changing the direction of gravitation, slowly and continuously, markedly retarded or eliminated the formation of segregation channels and that consequent macrosegregation was also retarded and reduced. The application of the principle to foundry practice is discussed. More... »

PAGES

495-501

References to SciGraph publications

  • 1970-08. The origin of freckles in unidirectionally solidified castings in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • 1978-12. Macrosegregation in Rotated Remelted Ingots in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • 1970-05. Interdendritic fluid flow and macrosegregation; influence of gravity in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • 1970-06. Convective Fluid Motion Within the Interdendritic Liquid of a Casting in METALLURGICAL AND MATERIALS TRANSACTIONS B
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    http://scigraph.springernature.com/pub.10.1007/bf02667766

    DOI

    http://dx.doi.org/10.1007/bf02667766

    DIMENSIONS

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