Development of micro-Laue technique at Shanghai Synchrotron Radiation Facility for materials sciences  

上海光源微束劳厄技术的发展及其在材料科学研究中的应用

作　　者：Chenyu Ren Li Jiang Jiawei Kou Shuai Yan Li Li Mengting Liu Xiaohao Dong Kai Chen Zhongliang Li Zhijun Li Xiaoxu Huang Renzhong Tai 任晨宇;蒋力;寇嘉伟;闫帅;李丽;刘孟廷;董晓浩;陈凯;李中亮;李志军;黄晓旭;邰仁忠(Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano),State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,China;Center for Thorium Molten Salt Reactor System,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;International Joint Laboratory for Light Alloys(MOE),College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano),State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,China [2]Center for Thorium Molten Salt Reactor System,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [3]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [4]International Joint Laboratory for Light Alloys(MOE),College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China

出　　处：《Science China Materials》2021年第9期2348-2358,共11页中国科学（材料科学（英文版）

基　　金：supported by the National Key Research and Development Program of China (2016YFB0700404);the National Natural Science Foundation of China (91860109,U2032205, 51671154, and 51927801);the support from the International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies and the Collaborative Innovation Center of High-End Manufacturing Equipment

摘　　要：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,40μm(h)×50μm(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 Nibased 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 mapping 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 mapping combined with phase identification with micron-sized spatial resolution.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40×50μm2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.

关 键 词：synchrotron light source micro-Laue diffraction orientation/strain mapping peak profile analysis Ni-based superalloy 

分 类 号：TB302[一般工业技术—材料科学与工程]