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Femtosecond laser machining characteristics in a single-crystal superalloy

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Abstract

Femtosecond laser machining characteristics of a nickel-base single-crystal superalloy were investigated as a function of laser fluence and the number of laser pulses. The significant decrease of recast layer for femtosecond laser machining was observed compared with that for nanosecond laser machining. The ablation thresholds for 1, 10, and 100 femtosecond pulse exposure were measured. Two ablation regions of the ablated crater were observed. The change of the ablation diameter and depth depended on the laser fluence and the number of laser pulses. And higher laser fluence could enable a faster rate of laser-machining.

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Authors and Affiliations

  1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    Wei Zhang & Qiang Feng

  2. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an, 710119, China

    Wei Zhang & Guanghua Cheng

  3. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing, 100083, China

    Qiang Feng

  4. National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing, 100095, China

    Lamei Cao

Authors
  1. Wei Zhang
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  2. Guanghua Cheng
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  3. Qiang Feng
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  4. Lamei Cao
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Correspondence to Qiang Feng.

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Zhang, W., Cheng, G., Feng, Q. et al. Femtosecond laser machining characteristics in a single-crystal superalloy. Rare Metals 30 (Suppl 1), 639–642 (2011). https://doi.org/10.1007/s12598-011-0362-z

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  • DOI: https://doi.org/10.1007/s12598-011-0362-z

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