MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Glass Forming Ability and Thermal Properties of the Mg-Based Amorphous Alloys with Dual Rare Earth Elements Addition
J. S. C. JangC. C. TsengL. J. ChangC. F. ChangW. J. LeeJ. C. HuangC. T. Liu
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2007 Volume 48 Issue 7 Pages 1684-1688

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Abstract

The Mg58Cu31Y11−xNdx (x=0∼11) amorphous alloy rods with 3∼10 mm in diameter were prepared by Cu-mold injection method. The XRD result reveals that these entire Mg58Cu31Y11−xNdx alloy rods exhibit a broaden diffraction pattern of amorphous phase. A clear Tg (glass transition temperature) and supercooled region (about 70 K) were revealed for all of those Mg58Cu31Y11−xNdx amorphous alloy rods. The single stage crystallization of the Mg58Cu31Y11 alloy was found to change into two stages crystallization when large amount of Nd element was added into this alloy. In parallel, the crystallization temperature (Tx) and supercooled region (ΔTx) present a decreasing trend with increasing Nd content. The highest γ value of 0.414 occurs at the alloy compositions of Mg58Cu31Y4Nd7 and Mg58Cu31Y6Nd5 in this alloy system. Therefore, suitable addition of Nd element can obviously increase the glass forming ability for the Mg58Cu31Y11−xNdx alloy system.

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© 2007 The Japan Institute of Metals and Materials
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