The more shearing, the thicker shear band and heat-affected zone in bulk metallic glass

Abstract

In a compression test for a Zr-based bulk metallic glass, a dominant shear band was preserved before fracture by a cylindrical stopper. A heat-affected zone (HAZ) ∼10 μm thick together with shear band was discovered in the center of the deformed sample by preferential ion milling. By using a low aspect ratio sample for compression, diverse micron-scaled HAZs among multiple shear bands were also revealed. Based on above experimental results and the isothermal source model, it was found that the thickness of shear band and its HAZ increased continuously with the progression of shear deformation.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (NSFC) under Grant No. 50671104 and 50625103, and the “Hundred of Talents Project” by the Chinese Academy of Sciences. Prof. M.L. Sui would like to thank Prof. E. Ma for the stimulating discussion.

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Correspondence to M.L. Sui.

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Guo, H., Wen, J., Xiao, N. et al. The more shearing, the thicker shear band and heat-affected zone in bulk metallic glass. Journal of Materials Research 23, 2133–2138 (2008). https://doi.org/10.1557/JMR.2008.0258

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