首页 | 本学科首页   官方微博 | 高级检索  
     


Ultrafast X‐ray imaging of laser–metal additive manufacturing processes
Authors:Niranjan D. Parab  Cang Zhao  Ross Cunningham  Luis I. Escano  Kamel Fezzaa  Wes Everhart  Anthony D. Rollett  Lianyi Chen  Tao Sun
Affiliation:1. X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA;2. Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;3. Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA;4. Department of Energy's Kansas City National Security Campus, Managed by Honeywell Federal Manufacturing and Technologies, Kansas City, MO 64147, USA
Abstract:The high‐speed synchrotron X‐ray imaging technique was synchronized with a custom‐built laser‐melting setup to capture the dynamics of laser powder‐bed fusion processes in situ. Various significant phenomena, including vapor‐depression and melt‐pool dynamics and powder‐spatter ejection, were captured with high spatial and temporal resolution. Imaging frame rates of up to 10 MHz were used to capture the rapid changes in these highly dynamic phenomena. At the same time, relatively slow frame rates were employed to capture large‐scale changes during the process. This experimental platform will be vital in the further understanding of laser additive manufacturing processes and will be particularly helpful in guiding efforts to reduce or eliminate microstructural defects in additively manufactured parts.
Keywords:X‐ray imaging  laser powder‐bed fusion  particle ejection  melt pools  vapor depressions  additive manufacturing
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号