Grain Refinement of AZ91D Magnesium Alloy by In Situ Al4C3 Particles

Abstract:

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Experiments were conducted to fabricate the Al4C3 particles by powder in-situ synthesis process under argon atmosphere and examine the grain refinement of AZ91D magnesium alloy with the addition of 0.6%Al4C3(hereafter in mass fraction,%). By means of X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS), the results show the successful fabrication of Al4C3 particles. After adding 0.6%Al4C3, the average grain size of AZ91D magnesium alloy decreased from 360μm to 243μm. Based on the differential thermal analysis (DTA) results and calculations of the planar disregistry between Al4C3 and α-Mg, Al4C3 particles located in the central regions of magnesium grains can act as the heterogeneous nucleus of primary α-Mg phase.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

429-432

DOI:

10.4028/www.scientific.net/AMR.306-307.429

Citation:

H. Han et al., "Grain Refinement of AZ91D Magnesium Alloy by In Situ Al4C3 Particles", Advanced Materials Research, Vols. 306-307, pp. 429-432, 2011

Online since:

August 2011

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Price:

$35.00

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