Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Effect of Specimen Size on Liquid Segregation in Deformation Behavior of Mushy State Material

고액공존재료의 변형거동에서 재료의 크기가 액상편석에 미치는 영향

  • 윤성원 (부산대 대학원 기계공학부) ;
  • 서판기 (부산대 대학원 기계공학부) ;
  • 강충길 (부산대 기계공학부, 정밀정형 및 금형가공 연구소(ERC/NSDM))
  • Published : 2003.04.01
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Abstract

For the optimal net shape forging of S semi-solid materials (SSM), it is important to predict the deformation behavior and defects of materials. Among these defects, liquid segregation is detrimental to produce products with good mechanical properties. Moreover, to apply a numerical method to thixoforging, it is very important to prevent a liquid segregation during forming process. The liquid segregation phenomena in deformation behavior of semi-solid material with variation of test specimen size were studied. The SSM compression tests were performed by dynamic material test system with a furnace. Stress-strain curves and microstructures of SSM were investigated, and Porosities were analyzed to evaluate the effects of experiment parameters on liquid segregation.

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References

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