|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||NOW ON-DEMAND ONLY - Design of Graded Transition Joints between Grade 91 Ferritic/Martensitic Steel and 347 Austenitic Stainless Steels with Non-linear Composition Variation Using Integrated Computational Materials Engineering (ICME) Approach
||Rangasayee Kannan, Yousub Lee, Andres Marquez Rossy, Brian Jordan, Edgar Lara-Curzio, Peeyush Nandwana
|On-Site Speaker (Planned)
In this study, graded transition joints between grade 91 ferritic martensitic steel and 347 austenitic stainless steel with non-linear composition variation have been designed using ICME principles. Using inputs from classical mechanics, and CALPHAD to predict the C potential gradient a novel transition zone involving 5 different compositions with the width of each transition zone varying non-linearly has been proposed. Alongside the C chemical potential gradient predictions, CALPHAD was used to predict the coefficient of thermal expansion for the different compositions, which were used as inputs for the finite element model to predict the stress generated in the graded transition joint. It was found that the proposed transition zone produced a shallower C chemical potential gradient and lower stress during long-term aging than the conventional transition zone involving 10 compositions varying linearly.
||Additive Manufacturing, Iron and Steel, ICME