Abstract
Wire and arc additive manufacturing (WAAM) is promising for rapid fabricating the blanket component of fusion reactor in large scale with a complex structure, due to its high forming efficiency and low cost. In this work, two blanket components with inner-channeled structure were fabricated with 9Cr reduced activation ferritic/martensitic steel by WAAM. It was found that Ti reacted with oxygen to form TiO2 particles is situ in the melt pool of 9Cr-RAFMs with 0.5% addition of Ti. These high melting point particles refined the grain size by heterogeneous nucleation. The microstructures of 9Cr-RAFMs and 9Cr-RAFMs-0.5Ti were studied by SEM, EBSD and TEM. In addition, their mechanical properties at different temperatures were obtained. An increase in the mechanical strength of as-built9Cr-RAFMs-0.5Ti was observed due to the fine grain structure, high dislocation density and high number density of oxide dispersions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
