| Abstract Scope |
Ferritic/martensitic (FM) steels are being targeted for use in a range of advanced reactor concepts such as cladding and structural components. In particular, the high chromium steels like HT-9 and Grade 91 & Grade-92 are of interest. While other industries, like automotive, aerospace, and fossil-fired power companies are adopting and evaluating AM processes, the nuclear industry, including the fusion materials community, has been somewhat slow to capitalize on the seemingly beneficial aspects of AM. As such, the present talk will focus on the laser powder bed fusion based additive manufacturing of the three F/M steels: HT9, Grade-91, and Grade 92. A total of 30 samples were printed with different combinations of laser power, point distance, and point exposure time, in order to explore the process parameter window. Microstructural evolution and its influence on mechanical behavior will also be discussed. |