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Analysis of Deformation of Porous Metals

Published online by Cambridge University Press:  10 February 2011

Dong Nyung Lee
Affiliation:
Division of Materials Science and Engineering, Seoul National University, Seoul 151–742, Korea, dnlee@snumfc.snu.ac.kr
Heung Nam Han
Affiliation:
Sheet Products & Process Research Team, Technical Research Laboratories, Pohang Iron & Steel Co., Ltd., Pohang P.O. Box 36, Kyungbuk, 790–785, Korea
Kyu Hwan Oh
Affiliation:
Division of Materials Science and Engineering, Seoul National University, Seoul 151–742, Korea, dnlee@snumfc.snu.ac.kr
Hyoung Seop Kim
Affiliation:
Department of Metallurgical Engineering and Rapidly Solidified Material Research Center, Chungnam National University, Taejeon, 305-764, Korea
Corresponding
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Abstract

The elasto-plastic finite element method using a yield criterion advanced by Lee and Kim was employed to analyze the effect of indenting geometry on the Brinell hardness of sintered porous copper specimens with various densities. The changes in geometry of porous iron rings with various initial relative densities were also calculated for various friction coefficients between the metal rings and compression platens. The calculated hardness values were in very good agreement with the measured data. The friction coefficient could be determined from the relationship between the change in the inner diameter and height reduction of porous metal rings with various initial relative densities.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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References

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