Influence of Electron Beam Irradiation on Surface Roughness of Commercially AISI 5140 Steel

DOI Web Site Web Site 参考文献22件
  • Xu Hongbin
    Mould Technology Chongqing Municipal Key Laboratory of Institutions of Higher Education
  • Hu Jianjun
    Mould Technology Chongqing Municipal Key Laboratory of Institutions of Higher Education College of Material Science and Engineering, Chongqing University of Technology
  • Ma Chaoping
    College of Material Science and Engineering, Chongqing University of Technology
  • Chai Linjiang
    College of Material Science and Engineering, Chongqing University of Technology
  • Guo Ning
    Faculty of Materials and Energy, Southwest University Department of Mechanical and Materials Engineering, Queen's University

書誌事項

公開日
2017
DOI
  • 10.2320/matertrans.m2017093
公開者
公益社団法人 日本金属学会

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説明

<p>In this study, a commercially AISI 5140 steel with two different levels of initial surface state (initial high-roughness (IHR) and initial low-roughness (ILR)) was surface-treated by large-area pulsed electron beam irradiation (LPEBI). Surface morphology in 2D and 3D of the two types of samples after LPEBI treatment was characterized. The results show that the surface roughness of IHR samples decreases clearly with increasing LPEBI pulse numbers, while an opposite trend is found in the ILR samples. It is considered that the final surface roughness is influenced by surface remelting and formation of crater-like structures (CLSs) in local regions. For the IHR samples with amounts of mechanical scratches, the remelting plays the leading role, owing to the high surface energy which provides extra driving force for remelting during LPEBI. In contrast, such extra driving force is less due to the relatively flat surface of the ILR samples, instead remelting the surface suffers from the formation of CLSs in localized region. Compared to the formation of localized CLSs, the surface remelting is beneficial to surface roughness of the LPEBI processed samples.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 58 (11), 1519-1523, 2017

    公益社団法人 日本金属学会

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