Paper Titles

Shear Banding Analyses of Amorphous Alloys with Crystalline Particles
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Quasicrystallization of (Zr₆₅Al_7.5Cu_27.5)₉₅Ti₅ Glassy Alloy
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Effects of Addition of Al, Ti and Ag on Glass-Forming Ability of Cu₅₀Zr₅₀ Alloy
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Solid Solution Formation Criteria for High Entropy Alloys
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Glass Forming Ability and Thermal Properties of a Cu-Based Bulk Metallic Glass Microalloyed with Silicon
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Microstructure and Mechanical Properties in Friction Stir Processed Zr-Al-Ni-Cu Bulk Metallic Glass
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Structure of Zr-Cu and Zr-Ni Liquid Alloys Studied by High-Energy X-Ray Diffraction
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Defect Structures in Al-Ni-Rh Crystalline Approximants Studied by HREM and HAADF Techniques
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Microstructure of Rapidly Solidified Co-Sn-Ti and Co-Sn-Si Alloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 561-565Glass Forming Ability and Thermal Properties of a...

Glass Forming Ability and Thermal Properties of a Cu-Based Bulk Metallic Glass Microalloyed with Silicon

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Abstract:

The (Cu42Zr42Al8Ag8)100-xSix amorphous alloy rods, x =0 to 1, with 3 mm in diameter were prepared by Cu-mold drop casting method. The glass forming ability, thermal properties and microstructure evolution was studied by differential scanning calorimetry (DSC), and X-ray diffractometry (XRD). The XRD result reveals that these as-quenched (Cu42Zr42Al8Ag8)100-xSix alloy rods exhibit a broaden diffraction pattern of amorphous phase. The crystallization temperature and GFA (glass forming ability) of (Cu42Zr42Al8Ag8)100-xSix alloys increase with the silicon additions. The highest Trg (0.59) and γ value (0.405) occurred at the (Cu42Zr42Al8Ag8)99.75Si0.25 and (Cu42Zr42Al8Ag8)99.5Si0.5 alloy. In addition, both of the activation energy of crystallization and the incubation time of isothermal annealing for these (Cu42Zr42Al8Ag8)100-xSix alloys indicates that the (Cu42Zr42Al8Ag8)99.25Si0.75 alloy posses the best thermal stability among the (Cu42Zr42Al8Ag8)100-xSix alloy system.

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Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

1341-1344

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.1341

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Online since:

October 2007

Authors:

Jason S.C. Jang, Y.C. Huang, C.H. Lee, I.S. Lee, L.J. Chang

Keywords:

Amorphous, BMG, Cu-Based, Glass Forming Ability (GFA)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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