|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques II
||In-situ TEM Heating-cooling Experiments to Study Precipitate Evolution in DED 316L Steel
||Meriem Ben Haj Slama, Eva Héripré, Lluís Yedra, Manas Upadhyay
|On-Site Speaker (Planned)
In this work, we perform in-situ TEM experiments to understand the evolution of precipitates in DED 316L stainless steel due to Solid-State Thermal Cycling (SSTC) that occurs during AM. It is important to study the role of SSTC on microstructure evolution because the microstructural features affected by SSTC determine the material response.
Due to the intractability of probing microstructure evolution via electron microscopy during AM, we subject pre-built DED 316L steel samples to SSTC inside a TEM. The results of a series of such in-situ TEM SSTC experiments performed on pre-built DED 316L steel lamellae are presented. These experiments help us distinguish the role of (i) maximum temperature and (ii) maximum temperature rates occurring due to SSTC during AM, as well as the role of (iii) the type and number of SSTCs and (iv) post-process annealing, on the evolution of precipitates in DED 316L steel.
||Additive Manufacturing, Thin Films and Interfaces, Characterization