Effect of Pulse Electric Discharging on the Directional Solidification Structure of Pure Aluminum

Hai Guo Ren; Jian Su; Zhi Long Zhao; Chang Hui Ai

doi:10.4028/www.scientific.net/AMR.287-290.322

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290Effect of Pulse Electric Discharging on the...

Effect of Pulse Electric Discharging on the Directional Solidification Structure of Pure Aluminum

Abstract:

The effect of the pulse electric discharging (PED) on the solidification structure of pure aluminum during the directional solidification was investigated. Experimental results showed that fine microstructures were generated by exerting PED, and the cellular spacing decreased greatly with increasing current density. The effect of pulse electric discharge on the temperature gradient in front of the solid-liquid interface was analyzed, the cellular spacing was measured and expressed as the function of solidification processing parameter by using a nonlinear regression analysis, and the refinement mechanism using the PED treatment was also discussed.

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Periodical:

Advanced Materials Research (Volumes 287-290)

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322-325

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https://doi.org/10.4028/www.scientific.net/AMR.287-290.322

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Online since:

July 2011

Authors:

Hai Guo Ren, Jian Su, Zhi Long Zhao, Chang Hui Ai

Keywords:

Directional Solidification, Grain Refinement, Pulse Electric Discharge, Pure Aluminum

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