金属凝固:基于同步辐射原位成像技术的应用研究  

Metal Solidification:Application of Synchrotron Radiation In-situ Imaging Technique

作　　者：杜泽龙 郭恩宇 王同敏[1,2] Du Zelong;Guo Enyu;Wang Tongmin(Key Laboratory of Solidification Control and Digital Preparation Technology of Liaoning Province,School of Materials Science and Engineering,Dalian University of Technology;Ningbo Research Institute of Dalian University of Technology)

机构地区：[1]大连理工大学材料科学与工程学院,辽宁省凝固控制与数字化制备技术重点实验室 [2]大连理工大学宁波研究院

出　　处：《特种铸造及有色合金》2023年第10期1319-1335,共17页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(52022017,51974058,52371005,51927801)。

摘　　要：全面深入研究金属凝固过程中组织和缺陷的演变规律是优化材料成分与制备工艺,提高材料综合性能的关键。作为一种通用型、高精尖、无损定量研究方法,同步辐射X射线因其具有高通量、高时空分辨率等特点,在金属凝固过程的研究中得到了广泛应用。综述了国内外基于同步辐射成像技术开展金属凝固过程的研究进展,涉及金属凝固原位研究用装置建设与技术开发,以及针对各类金属材料如铝合金、镁合金、高温合金等的凝固研究进展,重点关注凝固过程的组织演变、外加物理场(如电场、磁场、超声场)作用下的金属凝固行为,并阐述了同步辐射原位成像技术在凝固过程数值模型研究中起到的重要作用。最后,对未来的研究方向进行了展望。A comprehensive and in-depth study of the evolution of microstructure and defects during metal solidifi-cation is the key to optimizing composition and preparation processes,thus improving the comprehensive per-formance of materials.As a general,high-precision nondestructive and quantitative research method,synchrotron radiation X-ray has been widely used in the field of metal solidification process due to high flux,high temporal and spatial resolution and other characteristics.The research progress in metal solidification process based on syn-chrotron radiation imaging technique was reviewed,including the construction of devices and technology develop-ment for in-situ research of metal solidification,as well as the solidification progress of various types of metallic materials such as aluminum alloy,magnesium alloy,superalloy,etc.The microstructure evolution of solidifica-tion process and metal solidification behavior under the action of external physical fields(such as electric field,magnetic field,ultrasonic field)was emphasized,and the important role of synchrotron radiation in-situ imaging technique in numerical modeling of solidification process was expounded.Finally,future research directions were prospected.

关 键 词：金属凝固 同步辐射成像 原位表征 组织演变 

分 类 号：TG115.22[金属学及工艺—物理冶金]