Densification and grain growth of alumina powder compacts were investigated under pressureless sintering, sinter forging, and hot pressing. A set of constitutive equations by Kwon et al. was used to predict densification under diffusional creep. A novel grain growth equation is proposed by generalizing the grain growth model of Wilkinson and Ca´ceres to predict grain growth during densification forming process of ceramic powders under general loading states. Material parameters in the constitutive equations were determined from experimental data under pressureless sintering and sinter forging. Theoretical predictions by using the constitutive equations for creep densification and grain growth were compared with experimental data of alumina powder compacts.
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October 1996
Technical Papers
High Temperature Densification Forming of Alumina Powder—Constitutive Model and Experiments
Y. S. Kwon,
Y. S. Kwon
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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K. T. Kim
K. T. Kim
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
Search for other works by this author on:
Y. S. Kwon
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
K. T. Kim
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
J. Eng. Mater. Technol. Oct 1996, 118(4): 448-455 (8 pages)
Published Online: October 1, 1996
Article history
Received:
June 3, 1995
Revised:
March 17, 1996
Online:
November 27, 2007
Citation
Kwon, Y. S., and Kim, K. T. (October 1, 1996). "High Temperature Densification Forming of Alumina Powder—Constitutive Model and Experiments." ASME. J. Eng. Mater. Technol. October 1996; 118(4): 448–455. https://doi.org/10.1115/1.2805941
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