Crystal-Grain Refinement of Materials under an Ultra-Strong Gravitational Field

Abstract:

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In this study, we investigate the crystalline states and conditions for the grain-refinement of Bi70Sb30 (at.%) alloy. It was considered under an ultra strong gravity field, the crystals were fine-grained from the primary grain sizes of several mm to several tens of mm, and the crystal growth followed with formation of graded-composition structure due to sedimentation of atoms along the direction of gravity. It was found that for the crystal-grain refinement in Bi70Sb30 alloy the minimum gravitational field and the minimum time duration were at least 160,000 G and 10 hours, respectively at about 200 °C.

Info:

Periodical:

Advanced Materials Research (Volumes 15-17)

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran

Pages:

639-642

DOI:

10.4028/www.scientific.net/AMR.15-17.639

Citation:

Y. Iguchi et al., "Crystal-Grain Refinement of Materials under an Ultra-Strong Gravitational Field", Advanced Materials Research, Vols. 15-17, pp. 639-642, 2007

Online since:

February 2006

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Price:

$35.00

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