Glass-forming ability and properties of new Au-based glassy alloys with low Au concentrations

Hai Guo; Wei Zhang; Chunling Qin; Jianbin Qiang; Mingwei Chen; Akihisa Inoue

doi:10.2320/matertrans.ME200809

Glass-forming ability and properties of new Au-based glassy alloys with low Au concentrations

Hai Guo, Wei Zhang, Chunling Qin, Jianbin Qiang, Mingwei Chen, Akihisa Inoue

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Au₄₀Si_17.20Cu_28.30Ag_5.7Pd ₅ glassy alloys showed a wide supercooled liquid region of 42-53 K and a large reduced glass transition temperature of 0.568-0.605, indicating high stabilization of supercooled liquid and high glass-forming ability (GFA). The best GFA was obtained from Au₄₀Si₂₀Cu₂₈Ag ₇Pd₅ alloy, and a fully glassy sample with a diameter of 6 mm could be fabricated by copper mold casting. The bulk glassy alloys exhibited very low T_g of 400-424 K, high fracture strength of over 1100 MPa, and corrosion resistance superior to SUS316L in 1NH₂SO₄ solution.

Original language	English
Pages (from-to)	1290-1293
Number of pages	4
Journal	Materials Transactions
Volume	50
Issue number	6
DOIs	https://doi.org/10.2320/matertrans.ME200809
Publication status	Published - 2009 Jun

Keywords

Bulk glassy alloy
Corrosion resistance
Glass transition temperature
Glass-forming ability
Gold-based alloy
Mechanical property

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Glass-forming ability and properties of new Au-based glassy alloys with low Au concentrations",

abstract = "Au40Si17.20Cu28.30Ag5.7Pd 5 glassy alloys showed a wide supercooled liquid region of 42-53 K and a large reduced glass transition temperature of 0.568-0.605, indicating high stabilization of supercooled liquid and high glass-forming ability (GFA). The best GFA was obtained from Au40Si20Cu28Ag 7Pd5 alloy, and a fully glassy sample with a diameter of 6 mm could be fabricated by copper mold casting. The bulk glassy alloys exhibited very low Tg of 400-424 K, high fracture strength of over 1100 MPa, and corrosion resistance superior to SUS316L in 1NH2SO4 solution.",

keywords = "Bulk glassy alloy, Corrosion resistance, Glass transition temperature, Glass-forming ability, Gold-based alloy, Mechanical property",

author = "Hai Guo and Wei Zhang and Chunling Qin and Jianbin Qiang and Mingwei Chen and Akihisa Inoue",

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AU - Zhang, Wei

AU - Qin, Chunling

AU - Qiang, Jianbin

AU - Chen, Mingwei

AU - Inoue, Akihisa

PY - 2009/6

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AB - Au40Si17.20Cu28.30Ag5.7Pd 5 glassy alloys showed a wide supercooled liquid region of 42-53 K and a large reduced glass transition temperature of 0.568-0.605, indicating high stabilization of supercooled liquid and high glass-forming ability (GFA). The best GFA was obtained from Au40Si20Cu28Ag 7Pd5 alloy, and a fully glassy sample with a diameter of 6 mm could be fabricated by copper mold casting. The bulk glassy alloys exhibited very low Tg of 400-424 K, high fracture strength of over 1100 MPa, and corrosion resistance superior to SUS316L in 1NH2SO4 solution.

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