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Research on a New Type Grain Refiner Refining α-Al by Adding Molten State and Diluted Al-Ti-B-RE Master Alloy

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Abstract:

Al-Ti-B-RE master alloy was prepared by casting of pure Ti. To improve the quality and reduce the cost of α- Al, the Al-Ti-B-RE master alloy was added to α-Al in molten and diluted state. The refining method had the advantages of shorter contact time and better refining effect. The array of the second phase particles was separated and the nucleating rate was greatly increased. Analysis and comparison of the refining effects were by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical microscopy (OM).The refining experiment showed that the molten and diluted state Al-Ti-B-RE by oneself had better grain refining performance and had obvious advantages over Al-Ti-B in domestic.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

915-918

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.915

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Online since:

June 2012

Authors:

Zheng Jun Wang

Keywords:

Al-Ti-B-RE Master Alloy, Grain Refiner, Molten State and Diluted

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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