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http://dx.doi.org/10.5228/KSPP.2003.12.2.094

The Effect of Specimen Size on Liquid Segregation in Deformation Behavior of Mushy State Material  

윤성원 (부산대 대학원 기계공학부)
서판기 (부산대 대학원 기계공학부)
강충길 (부산대 기계공학부, 정밀정형 및 금형가공 연구소(ERC/NSDM))
Publication Information
Transactions of Materials Processing / v.12, no.2, 2003 , pp. 94-101 More about this Journal
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.
Keywords
Liquid Segregation; Porosities; Test Specimen Size; Compression Test; Semi-Solid Material;
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