|About this Abstract
||MS&T21: Materials Science & Technology
||Late News Poster Session
||Microstructural Conditioning to Reveal Prior Austenitic Grain Using the Oxidation Method
||David Fernandez-Sanchez, Alexis Ivan Gallegos-Perez, Octavio Vázquez-Gómez, Pedro Garnica-Gonzalez, Hector Javier Vergara-Hernandez, Antonio Oliver-Reynoso
|On-Site Speaker (Planned)
The microstructure of an experimental 1Cr-1Mo-0.3V steel was conditioned by applying heat treatments to reveal prior austenitic grain size, since the predominant microstructure is a combination of ferrite, acicular ferrite and bainite promoted by alloying elements contained in the steel. The specimens surfaces heat treated under homogenized-annealed and homogenized-normalized conditions were prepared through the oxidation and chemical etching method with a solution of hydrochloric acid, picric acid and ethyl alcohol (Vilella), before and after quenching, respectively. Microstructures obtained were analyzed by optical microscopy depending on treatment condition. Finally, it was determined that the revealing of prior austenitic grain is sensitive to the initial microstructure, as well as the exposure time during chemical etching, standing out the grain refinement in the microstructure despite previous conditioning.