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Metallograpiuc Study of Gasar Porous Magnesium

Published online by Cambridge University Press:  10 February 2011

Chanman Park
Affiliation:
University of Southern California, Department of Materials Science, Los Angeles, CA.
Steven R. Nutt
Affiliation:
University of Southern California, Department of Materials Science, Los Angeles, CA.
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Abstract

One of the promising techniques for making porous metals is the so-called GASAR process. In principle, the process affords considerable control over pore size, shape, and distribution. However, in practice, the pore microstructure is difficult to control, and a clearer understanding of microstructural evolution would be helpful. In this study, we undertake a detailed microstructural study of a porous Mg and AZ31 Mg alloy synthesized by the GASAR process. Microscopic studies demonstrated the presence of different pore size ranges. The pore distribution depended on the distance from the chill end of ingots. TEM observations revealed apparent crack lines (gas tracks) near the pores and ternary intermetallic phases in the alloy.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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References

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