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Thermal Stability of Amorphous Al-Fe-Y Prepared by Mechanical Alloying

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Abstract:

Al-Fe-Y amorphous alloys of Al84Fe16, Al82Fe18 and Al82Fe16Y2 composition were prepared by mechanical alloying in a planetary ball mill P100. A nearly complete amorphization could be achieved for the Al84Fe16, Al82Fe18 and Al82Fe16Y2 powder alloys after 100h of milling at a rotational speed of 350 rpm in hexane medium. Differential scanning calorimetry (DSC) analyses revealed three-stage crystallization processes for Al82Fe18 and Al82Fe16Y2 alloys and four-stage crystallization processes for Al84Fe16 alloy, respectively. Taking into account the DSC data, the thermal stability increased in the order of Al84Fe16, Al82Fe18, and Al82Fe16Y2 composition. The Al82Fe16Y2 alloy exhibited a relatively better thermal stability than the other two alloys.

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Periodical:

Materials Science Forum (Volume 804)

Pages:

271-274

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.804.271

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Online since:

October 2014

Authors:

Hoang Viet Nguyen*, Nguyen Thi Hoang Oanh, Pham Ngoc Dieu Quynh, Tran Quoc Lap, Ji Soon Kim

Keywords:

Al-Based Amorphous Alloys, Mechanical Alloying, Thermal Stability

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