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Crystallization Behavior and Mechanical Properties of Mg86.33Ni12.67Y1 Amorphous Alloy

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Abstract

Mg86.33Ni12.67Y1 amorphous alloy was obtained by a single-roller melt-spinning technique and some samples were isothermally annealed at different temperatures. The glass-forming ability (GFA), crystallization behavior and the effect of annealing treatment on the mechanical properties of the alloy were studied. The results show that for Mg86.33Ni12.67Y1 amorphous alloy, the reduced glass transformation value Trg (Trg = Tg/Tl) is 0.5089 and the width of super-cooled liquid region (ΔTx) is 40.08 K. When the samples were annealed at 413 K, the degree of short-range order of the amorphous atoms as well as the micro-hardness, increased due to structural relaxation, with increasing time, completing at 10 min. Significant crystallization of the Mg86.33Ni12.67Y1 alloy occurred after annealing above 443 K, and two crystalline phases, Mg6Ni and Ni7Y2 were precipitated into the amorphous matrix. With increasing annealing temperature (range: 573–653 K), Mg6Ni crystals were gradually transformed into Mg2Ni and α-Mg. The micro-hardness decreased significantly with temperatures above 413 K. This was accompanied by a decrease in free volume of the matrix during the crystallization of the two phases.

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Acknowledgments

This work is supported by Nature Science Foundation of Shandong Province (No. Y2007F69)and the Foundation for Outstanding Young Scientist in Shandong Province (No. 2008BS04018).

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Authors and Affiliations

  1. School of Material Science and Engineering, University of Jinan, Jinan, 250022, China

    Xin-ying Teng, Li-yan Liu & Teng Liu

  2. School of Physics, University of Jinan, Jinan, 250022, China

    Yong-jie Wang

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  1. Xin-ying Teng
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  2. Li-yan Liu
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Correspondence to Xin-ying Teng.

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Presented in part at the 1st International Congress on Advanced Materials held in Jinan, PRC, from May 12-17, 2011.

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Teng, Xy., Liu, Ly., Wang, Yj. et al. Crystallization Behavior and Mechanical Properties of Mg86.33Ni12.67Y1 Amorphous Alloy. J Inorg Organomet Polym 22, 12–16 (2012). https://doi.org/10.1007/s10904-011-9639-7

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  • DOI: https://doi.org/10.1007/s10904-011-9639-7

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