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TECHNICAL PAPERS

An Optimal Container Design for Metal Powder Under Hot Isostatic Pressing

[+] Author and Article Information
S. H. Chung, H. Park, K. D. Jeon, K. T. Kim, S. M. Hwang

Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea

J. Eng. Mater. Technol 123(2), 234-239 (Jan 15, 2001) (6 pages) doi:10.1115/1.1354992 History: Received November 19, 1999; Revised January 15, 2001
Copyright © 2001 by ASME
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References

Figures

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Initially guessed shape of the container for hot isostatic pressing
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Desired shape of the powder compact under hot isostatic pressing
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Test conditions for temperature and loading during hot isostatic pressing
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Finite element meshes and the coordinates of control points which define B-spline curves
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Comparisons of the shapes of 316L stainless-steel powder compacts; desired shape, experimental data and finite element calculations
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A comparison between the design sensitivity evaluated by the direct approach and those by the direct differentiation method
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Variation of the objective value during optimization
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An optimal container shape obtained from finite element calculations under hot isostatic pressing
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Cross-sections of 316L stainless-steel powder compacts produced at 1125°C under 100 MPa during HIPing; (a) initial shape and (b) after 2 h
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A comparison between the desired shape (dashed) and experimental data (solid) of a 316L stainless-steel powder compact by using the optimally designed container
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A comparison between (a) experimental data and (b) finite element calculations for density distribution of a 316L stainless-steel powder compact produced at 1125°C under 30 MPa for 15 min during HIPing by using the optimally designed container

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