|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||In Situ Lab Scale X-Ray Microtomography of a Cast Duplex Stainless Steel
||Qingdong Zhang, Sridhar Niverty, Arun Sundar Sundaram Singaravelu, Jason J. Williams, Tao Jing, Nikhilesh Chawla
|On-Site Speaker (Planned)
Cast duplex stainless steels (CDSS) consisting of ferrite and austenite have been extensively used in chemical, petrochemical and nuclear industries owing to their excellent combination of mechanical properties and corrosion resistance. The structure and morphology of the ferrite has a significant effect on the hot cracking susceptibility and corrosion resistance. Most of the X-ray tomography experiments in steels have been conducted at synchrotron beamlines because of their relatively high density. In this work, a lab scale X-ray tomography approach was used to investigate the microstructure of a centrifugally cast Z3CN20.09M duplex stainless steel. Specimens were characterized from the inner and outer walls of a primary cooling pipe used in a pressurized water reactor. Quantitative analysis of volume, size, and morphology of the ferrite was performed. Scanning electron microscopy, focused ion beam, and electron backscatter diffraction analysis were used in a correlative manner to provide unique insight into the microstructural evolution.
||Planned: None Selected