Homogeneous deformation of Au-based metallic glass micropillars in compression at elevated temperatures

Journal Article · Mon Feb 09 00:00:00 EST 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3081111· OSTI ID:21175954

Song, S X; Nieh, T G ^[1]; Lai, Y H; Huang, J C ^[2]

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1. Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Department of Materials and Optoelectronic Science and Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan (China)

We performed high-temperature microcompression tests on micron-sized pillar samples fabricated from Au{sub 49}Ag{sub 5.5}Pd{sub 2.3}Cu{sub 26.9}Si{sub 16.3} metallic glass near the glass transition temperature to investigate the homogeneous deformation behavior. Samples were invariably deformed uniformly. The strength was observed to decrease with increasing temperature and decreasing strain rate. Plastic flow behavior can be described by a shear transition zone model. The activation energy and the size of the basic flow unit were both deduced and compared favorably with the theory.

• OSTI ID: 21175954
• Journal Information: Applied Physics Letters, Vol. 94, Issue 6; Other Information: DOI: 10.1063/1.3081111; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACTIVATION ENERGY
COPPER ALLOYS
DEFORMATION
GOLD ALLOYS
METALLIC GLASSES
PALLADIUM ALLOYS
SILICON ALLOYS
SILVER ALLOYS
STRAIN RATE
TRANSITION TEMPERATURE