Ti-Al-Zr-B-Y Amorphous Alloy Powders Prepared by Mechanical Alloying

Yu Ying Zhu; Yun Hua He; Qiang Li

doi:10.4028/www.scientific.net/AMR.1095.222

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1095Ti-Al-Zr-B-Y Amorphous Alloy Powders Prepared by...

Ti-Al-Zr-B-Y Amorphous Alloy Powders Prepared by Mechanical Alloying

Abstract:

Mechanical alloying (MA) is used to prepare amorphous alloy powders. The experiments were performed by a high energy ball milling device using stainless steel vessels and balls under argon atmosphere at a rotation rate of 450 r/min. B and Y were used as the minor additions to prepare new quaternary or complex amorphous alloy powders. Ti₅₀Al_(47-x-y)Zr₃B_xY_y (x=0, 0.6, y=0, 0.2) amorphous alloy powders were successively obtained. The milled amorphous alloy powders were characterized by XRD, SEM and DSC. Ti₅₀Al₄₇Zr₃ amorphous alloy powders were obtained after milled 50h. The milling time needed to obtain complete amorphous alloy for Ti₅₀Al_46.4Zr₃B_0.6, Ti₅₀Al_46.8Zr₃Y_0.2and Ti₅₀Al_46.2Zr₃ B_0.6Y_0.2 are 40h, 35h and 30h, respectively. Minor additions of B and Y decreases the milling time for preparing amorphous alloy. SEM shows that B and Y can refine the grain of the amorphous alloy powders. DSC shows that minor substitution of 0.6at.%B or 0.2at.%Y can increase the glass forming ability (GFA) for the TiAl based alloys.

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Advanced Materials Research (Volume 1095)

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222-225

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https://doi.org/10.4028/www.scientific.net/AMR.1095.222

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Online since:

March 2015

Authors:

Yu Ying Zhu*, Yun Hua He, Qiang Li

Keywords:

Amorphous Alloy, Mechanical Alloying, Minor Additions

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