Study on Microstructure of Semi-Solid Magnesium Alloy Manufactured by Gas Bubbles Stirring

Abstract:

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The semi-solid slurry of AZ31 magnesium alloy was manufactured by gas bubbles stirring. The effects of stirring temperature and stirring time on the microstructure of semi-solid slurry were researched. The results indicate that it is feasible to manufacture the slurry with particle-like primary phases. When the stirring temperature is higher, the morphology of the primary a-Mg presents rosette-like morphology and the size of grain is coarse, and the morphology mainly was α- Mg dendrite at lower stirring temperature. Long stirring time could reduce dendrites and liquid phase, and made the non-dendritic grains well spheroidized. But the effects of longer stirring on shape and size of primary particles are not significant. The optimal process parameters for ideal semi-solid slurry manufactured were stired 3min at 645°C.

Info:

Periodical:

Advanced Materials Research (Volumes 129-131)

Edited by:

Xie Yi and Li Mi

Pages:

728-732

DOI:

10.4028/www.scientific.net/AMR.129-131.728

Citation:

J. Li et al., "Study on Microstructure of Semi-Solid Magnesium Alloy Manufactured by Gas Bubbles Stirring", Advanced Materials Research, Vols. 129-131, pp. 728-732, 2010

Online since:

August 2010

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Price:

$35.00

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