Proceedings of the Korean Society of Precision Engineering Conference (한국정밀공학회:학술대회논문집)
- 2004.10a
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- Pages.668-671
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- 2004
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- 2005-8446(pISSN)
Stress Concentration Analysis of Grain Refinement in Rheology Casting Process
- Z., Yang (Precision Mechanical Eng. Dept., PNU) ;
- P. K., Seo (Precision Mechanical Eng. Dept., PNU) ;
- J.H., Ko (Precision Mechanical Eng. Dept., PNU) ;
- Y. S., Jung (Precision Mechanical Eng. Dept., PNU) ;
- C. G., Kang (Mechanical Eng. Dept., PNU)
- Published : 2004.10.01
Abstract
The mechanics of the dendrite fragmentation is a very important aspect of grain refinement in rheocasting. In this work, the stress field of the dendrite stirred in the semisolid slurry was simulated by Metlab 6.0 software. The result shows that stress concentration at the root of the dendrite arms is great enough to cause plastic deformation though the agitation is moderate. Accordingly, dendrite fragmentation was suggested to be caused by fractured after fatigue erosion.