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Study on surface roughness and top burr of micro-milled Zr-based bulk metallic glass in shear dominant zone

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Abstract

As a novel class of versatile advanced materials with excellent mechanical, physical, and chemical properties, bulk metallic glasses (BMGs) are promising materials for micro-molds and micro-components. In this paper, the influence of feed rate, rotation speed, and axial depth of cut on surface roughness and top burr size of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass in a shear dominant zone was investigated by micro-milling with coated two-tooth cemented carbide tools. Initially, the shear dominant zone was identified by analyzing milling force, specific cutting force, surface roughness, and top burr width under different feed rates. Then, a surface morphology model considering the effect of runout was established to study the surface formation process and the influence of runout on surface roughness. Finally, the effects of rotation speed and axial depth of cut on surface roughness and burr size were investigated by an experimental approach. This study proved that, under the optimized parameters, excellent surface quality (Ra around 0.1 μm) and small burr width (below 20 μm) could be obtained by micro-milling Zr-based bulk metallic glass.

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Acknowledgements

This work is supported by the China Postdoctoral Science Foundation (Grant Nos. 2019M663043), the National Natural Science Foundation of China (Grant Nos. 51575360 and 51805333), and the Science and Technology Innovation Commission Shenzhen (Grant Nos. JCYJ20170817094310049 and JSGG20170824111725200). The authors are also grateful to the colleagues for their essential contribution to the work.

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Authors and Affiliations

  1. Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Nan-hai Ave. 3688, Shenzhen, 518060, Guangdong, China

    Tao Wang, Xiaoyu Wu, Guoqing Zhang, Yinghua Chen & Bin Xu

  2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China

    Tao Wang & Shuangchen Ruan

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  1. Tao Wang
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  2. Xiaoyu Wu
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  3. Guoqing Zhang
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  4. Yinghua Chen
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  5. Bin Xu
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Correspondence to Xiaoyu Wu.

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Wang, T., Wu, X., Zhang, G. et al. Study on surface roughness and top burr of micro-milled Zr-based bulk metallic glass in shear dominant zone. Int J Adv Manuf Technol 107, 4287–4299 (2020). https://doi.org/10.1007/s00170-020-05325-7

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  • DOI: https://doi.org/10.1007/s00170-020-05325-7

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