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“Extended” shear bands in interior of Pd-based bulk metallic glasses

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Abstract

Shear bands in the interior of Pd79Cu6Si10P5, Pd79Cu3Ag3Si10P5, and Pd79Cu4Au2Si10P5 bulk metallic glasses were investigated by optical microscopy (OM) and scanning electron microscopy (SEM). No shear bands can be observed in the samples before etching. By etching in aqua regia solution, shear bands are found to be susceptible to preferential etching, and multiple etched bands could be observed. The thickness of the etched bands is about 1–7 μm. Therefore, the preferentially etched shear bands found in the study are called the “extended” shear bands. The “extended” shear bands can be divided into three classes according to their features: early, developing, and well-developed “extended” shear bands with thickness of about 1, 5, and 7 μm, respectively. The interface between the well-developed “extended” shear bands and the matrix is clearer than that of the others.

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Acknowledgments

This work study was financially supported by the National Natural Science Foundation of China (Nos. 51101133 and 51101134), the Encouraging Foundation for Outstanding Youth Scientists of Shandong Province, China (No. BS2012CL036), and the Shandong Provincial Natural Science Foundation, China (No. ZR2011EL025).

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Authors and Affiliations

  1. School of Environment and Materials Engineering, Yantai University, Yantai, 264005, China

    Li Liu, He Song, Xiang-Jin Zhao & Wei Du

  2. School of Materials Science and Engineering, Beihang University, Beijing, 100191, China

    Tao Zhang

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  1. Li Liu
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  2. He Song
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  3. Xiang-Jin Zhao
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  4. Wei Du
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Correspondence to Li Liu.

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Liu, L., Song, H., Zhao, XJ. et al. “Extended” shear bands in interior of Pd-based bulk metallic glasses. Rare Met. 37, 54–58 (2018). https://doi.org/10.1007/s12598-015-0563-9

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  • DOI: https://doi.org/10.1007/s12598-015-0563-9

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