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Investigation of amorphous and crystalline Ni alloys response to machining with micro-second and pico-second lasers

机译：研究微秒和皮秒激光对非晶态和结晶态镍合金的响应

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摘要

The machining response of amorphous and polycrystalline Ni-based alloys (Ni_(78)B_(14)Si_8) when subjected to micro-second and pico-second laser processing is investigated in this research. The shape and topography of craters created with single pulses as a function of laser energy together with holes drilled in both materials were studied. Focused ion beam (FIB) imaging was used to analyse the single craters and the through holes in the amorphous and polycrystalline samples. The material microstructure analysis revealed that processing both materials with micro-second and pico-second lasers does not lead to crystallisation and the short-range atomic ordering of metallic glasses can be retained. When processing the amorphous sample the material laser interactions resulted in a significant ejection of molten material from the bulk that was then followed by its partial re-deposition around the craters. Additionally, there were no signs of crack formation that indicate a higher surface integrity after laser machining. A conclusion is made that laser processing both with short- and long-pulses is a promising technique for micromachining metallic glasses because it does not lead to material crystallisation.
机译：研究了非晶和多晶Ni基合金（Ni_（78）B_（14）Si_8）在微秒和皮秒激光加工中的加工响应。研究了由单脉冲产生的弹坑的形状和形貌与激光能量以及在两种材料中钻孔的关系。聚焦离子束（FIB）成像用于分析非晶和多晶样品中的单个凹坑和通孔。材料的微观结构分析表明，用微秒和皮秒激光处理两种材料都不会导致结晶，并且可以保留金属玻璃的短程原子有序性。当处理无定形样品时，材料的激光相互作用会导致从主体中大量喷出熔融材料，然后将其部分重新沉积在弹坑周围。另外，没有裂纹形成的迹象表明激光加工后具有更高的表面完整性。得出的结论是，短脉冲和长脉冲激光处理都是微加工金属玻璃的有前途的技术，因为它不会导致材料结晶。

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  • 来源
    《Applied Surface Science》 |2009年第14期|6641-6646|共6页
  • 作者

    I. Quintana; T. Dobrev; A. Aranzabe; G. Lalev; S. Dimov;

  • 作者单位

    CIC marGUNE, Pol. Ibaitarte 5, 20870, Elgoibar, Guipuzcoa, Spain Tekniker Technological Centre, Manufacturing Processes Department, Av. Otaola, 20 - Apdo., P.O. Box 44, 2060 Eibar, Guipuzcoa, Spain;

    Manufacturing Engineering Centre, Cardiff University, Cardiff, CF24 3AA, United Kingdom;

    Manufacturing Processes Department, Fundacion Tekniker, Av. Otaola 20, 2060, Eibar, Guipuzcoa, Spain;

    Manufacturing Engineering Centre, Cardiff University, Cardiff, CF24 3AA, United Kingdom;

    Manufacturing Engineering Centre, Cardiff University, Cardiff, CF24 3AA, United Kingdom;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    amorphous Ni; laser ablation; micro-second laser; pico-second laser; focused ion beam;

    机译：非晶态Ni激光烧蚀微秒激光;皮秒激光;聚焦离子束;

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