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Research on microlaser aided machinability of single crystal Beryllium cutting based on molecular dynamics

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Abstract

Beryllium is a typical hard cutting material because of its high hardness and brittleness. The laser allows rapid heating of the local material before removal, thus improving the machinability. In this paper, the machining properties of single crystal beryllium under different laser power were studied by using molecular dynamics (MD) method to simulate the micro-laser assisted cutting process. The cutting behavior of beryllium was characterized by cutting force, internal stress, crystal transformation in cutting area, internal dislocation of workpiece, chip and surface quality. During the cutting process, the laser promoted the crystal phase transition, revealed the reason of the significant increase in the number of 11-coordination beryllium atoms, and analyzed the change and distribution of the number of amorphous atoms in the crystal caused by the change of laser power. The effect of laser power on cutting force and equivalent stress in front of tool was investigated. The effects of laser parameters on atomic displacement and surface mass were studied by using the chip quantity and surface morphology obtained by simulation. The effect of laser on dislocation slip in crystal is studied by comparing the length and distribution region of various dislocation lines.

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Due to the large size of the data file, the data file is not disclosed, and the corresponding author can be obtained if requested by the author.

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Acknowledgements

This research was supported by the National Natural Science Foundation of China (51975545) and the Nature Foundation of Shandong Province (ZR2022ME036).

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Authors and Affiliations

  1. Institute Harbin University of Science and Technology, Harbin, China

    Xuefeng Wu & Xinying Tang

  2. China Academy of Engineering Physics, Mianyang, China

    Fengsheng Qu

Authors
  1. Xuefeng Wu
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  2. Xinying Tang
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Contributions

This paper was written by Wu Xuefeng, Tang Xinying and Qu Fengsheng. Tang Xinying independently completed the research design and data analysis, Tang Xinying took the lead in writing the paper, Wu Xuefeng proofread all drafts, Wu Xuefeng gave the first guidance for the paper, and Qu Fengsheng conducted an objective review of the paper. All authors have contributed to the further revision of this article. Wu Xuefeng gave important guidance in solving difficult or complex problems in the article. In addition, Wu Xuefeng and Qu Fengsheng went through the whole review process and confirmed the scientific nature of the article.Finally, all the authors have contributed to the writing and revision of the paper, and have some constructive suggestions and improvement suggestions to ensure that the paper can accurately express the complex research results.

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Correspondence to Xuefeng Wu.

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Wu, X., Tang, X. & Qu, F. Research on microlaser aided machinability of single crystal Beryllium cutting based on molecular dynamics. Appl. Phys. A 130, 248 (2024). https://doi.org/10.1007/s00339-024-07391-0

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  • DOI: https://doi.org/10.1007/s00339-024-07391-0

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