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[资源] 【资源】大块非晶室温拉伸塑性文章

Malleable hypoeutectic Zr-Ni-Cu-Al bulk glassy alloys with tensile plastic elongation at room temperature
Authors: Y. Yokoyama a; K. Fujita b; A. R. Yavari c; A. Inoue a
Affiliations:
a Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
b Department of Mechanical Engineering, Ube National College of Technology, Ube 755-8555, Japan
c SIMAP-CNRS, Institut Polytechnique de Grenoble, 38402 France
DOI: 10.1080/09500830902873575
Publication Frequency: 12 issues per year
Published in:

Philosophical Magazine Letters First Published on: 03 April 2009
Subjects: Ceramics & Glasses; Composites; Condensed Matter Physics; Crystallography; Materials Science; Metals & Alloys; Nanoscience & Nanotechnology; Polymers & Plastics;
Formats available: HTML (English) : PDF (English)
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Abstract
A new bulk glassy alloy (BGA) showing macroscopic tensile plastic elongation at room temperature has been developed in the hypoeutectic Zr-Ni-Cu-Al alloy system. The hypoeutectic Zr-Ni-Cu-Al BGA shows a high Poisson's ratio, a low Young's modulus, and is highly malleable in compression. It exhibits a Poisson's ratio of 0.39, a Young's modulus of 73 GPa, and a distinct tensile plastic elongation of about 1.7% at room temperature with necking due to the operation of many shear bands. The tensile plastic deformability seems to originate from modifications of the glass structure with increasing the number of Zr-Zr atomic pairs in the hypoeutectic composition.
Keywords: metallic glasses; tensile testing
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[ Last edited by hslining on 2009-9-10 at 14:39 ]

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