Abstract
Synchrotron radiation-based micro-Laue technique has showcased great application potentials in materials science study for its unprecedented crystal orientation and lattice strain/stress resolution. Here we report the updated progress in the development of the micro-Laue technique on the X-ray test beamline at Shanghai Synchrotron Radiation Facility. So far, 40 µm (h) × 50 µm (v) X-ray beam spot is routinely obtained, with the convergent angle of 0.2 mrad (h) × 0.12 mrad (v). Area scans are conducted on a GH3535 Ni-based superalloy base metal and weld joint with the same chemical composition. By analyzing the tremendous amount of Laue diffraction patterns using in-house developed software packages, the crystal orientation, elastic strain, and defect distributions are mapped and investigated. Such a successful proof-of-principle study offers first-hand experience on the further optimization of the design and construction of the scanning micro-Laue facility on the superbend beamline with improved spatial resolution and multiple functions for simultaneous chemical fluorescence map** and in-situ microstructural evolution studies. The micro-Laue diffraction beamline at Shanghai Synchrotron Radiation Facility will provide a versatile and powerful tool for the orientation and strain/stress map** combined with phase identification with micron-sized spatial resolution.
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摘要
同步辐射微束劳厄技术以其超高的晶体取向和晶格应力/应变分辨率而在材料科学研究中显示出重要的应用潜力. 本文报道了我国上海光源在微束劳厄技术方面的最新进展. 目前已获得40× 50 μm2的X射线束斑尺寸, 在我国(不含台湾省)首次实现了白光微束劳厄二维扫描实验, 利用我国首套完全独立研发、具有自主知识产权的数据分析软件系统, 成功定量研究了镍基高温合金GH3535母材与焊缝区域晶体取向、应变和显微缺陷等微观组织结构特征, 并提出了后续线站优化设计方案. 在未来工作中, 将进一步提高空间分辨率, 加入X射线荧光分析与原位测试装置. 上海光源微束劳厄射线站将为材料科学研究提供更高的分辨率和更多的测试表征功能与能力.
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Acknowledgements
This work was supported by the National Key Research and Development Program of China (2016YFB0700404), and the National Natural Science Foundation of China (91860109, U2032205, 51671154, and 51927801). Chen K appreciates the support from the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies and the Collaborative Innovation Center of High-End Manufacturing Equipment.
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Tai R and Huang X proposed and supervised this work. Liu M, Dong X and Li ZL designed and built the micro-Laue beamline on BL09B. Jiang L, Yan S, Li L and Li ZJ prepared the superalloy specimens and conducted the 2D scans. Ren C, Kou J and Chen K developed the software packages, analyzed the data and interpreted the results. Chen K, Ren C, Li ZJ, Li ZL and Huang X wrote the paper. All authors contributed to the discussion.
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The authors declare that they have no conflict of interest.
Chenyu Ren is currently a PhD student at the Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), **’an Jiaotong University. Her research interests focus on the microstructure study of laser-processed Ni-based superalloys.
Li Jiang obtained his Master degree from Northwestern Polytechnical University in 2012 and PhD degree from the University of Chinese Academy of Sciences in 2017. He is now an associate professor at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. His research interests focus on the design of superalloys for nuclear applications and the alloy corrosion behavior by fission products using advanced material characterization approaches such as synchrotron radiation-based techniques.
Jiawei Kou obtained his Bachelor degree in 2018 and then continued his graduate study at the CAMP-Nano, **’an Jiaotong University. He is dedicated to the development of high-speed in-depth Laue diffraction data mining algorithms and software packages. He applies these new approaches to the study of the microstructures of advanced alloys.
Kai Chen obtained his Bachelor and PhD degrees from Peking University and the University of California Los Angeles in 2005 and 2009, respectively. After two postdoctoral stints at the University of California Berkeley and Lawrence Berkeley National Laboratory, he has been a professor at **’an Jiaotong University since 2011. He is interested in pushing the software and hardware developments for synchrotron micro-Laue diffraction and applying this advanced characterization method to the study of advanced engineering materials.
Zhongliang Li obtained his PhD degree from the National Synchrotron Radiation Laboratory, University of Science and Technology of China in 2011. He is currently an associate professor in the optical group of Shanghai Synchrotron Radiation Facility. His research interests focus on the X-ray measurement methodology of beam-line instruments and optical elements, synchrotron radiation-based science and technology, and the microstructural evolution of alloys under corrosive conditions of fission products.
Zhijun Li obtained his PhD degree from Harbin Institute of Technology in 2007. He holds the professorship at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. His research interests focus on the design and characterization of alloys for nuclear energy applications using advanced synchrotron radiation-based techniques.
Renzhong Tai obtained his PhD degree from the Graduate University for Advanced Studies, Japan in 1999. After postdoctoral research on coherent X-ray applications at Japan Atomic Energy Research Institute, he holds the professorship at Shanghai Institute of Applied Physics, Chinese Academy of Sciences. He is currently the executive deputy director of Shanghai Synchrotron Radiation Facility. His research interests focus on synchrotron radiation science and techniques, X-ray microscopy, X-ray detector technology, X-ray interference lithography, photon correlation spectroscopy, and beamline development.
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Ren, C., Jiang, L., Kou, J. et al. Development of micro-Laue technique at Shanghai Synchrotron Radiation Facility for materials sciences. Sci. China Mater. 64, 2348–2358 (2021). https://doi.org/10.1007/s40843-021-1648-3
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DOI: https://doi.org/10.1007/s40843-021-1648-3