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arXiv · 1506.02413

Impact of micro-alloying on the plasticity of Pd-based Bulk Metallic Glasses

N. Nollmann·I. Binkowski·V. Schmidt·H. Rösner·G. Wilde
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Abstract

Micro-alloying was performed using additions of Co and Fe to monolithic Pd40Ni40P20 bulk metallic glass to study selectively the influence on the plastic behavior in uniaxial compression and three-point bending tests. The corresponding Poisson's ratios were determined by ultrasonic measurements. The microstructure of the individual bulk metallic glasses was characterized by electron microscopy, X-ray diffraction and calorimetry. A plastic strain of 13% was found for the Co addition (1 at.%), whereas the Fe addition (0.6 at.%) led to immediate failure after reaching the elastic limit. Surprisingly, the plasticity is not reflected by the high Poisson's ratio of 0.4 since it remained unaffected by the minor alloying.

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N. Nollmann, I. Binkowski, V. Schmidt, H. Rösner, G. Wilde. 2015-06-08. Impact of micro-alloying on the plasticity of Pd-based Bulk Metallic Glasses. https://arxiv.org/abs/1506.02413

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