|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Phase Transformations and Microstructural Evolution
|O-27: Influence of the Austenitic Grain Size on the Strength in a Medium-carbon and Low-alloy Steel
|David Fernández-Sánchez, Octavio Vázquez-Gómez, Alexis Iván Gallegos-Pérez, Pedro Garnica-González, Héctor Javier Vergara-Hernández
|On-Site Speaker (Planned)
The mechanical strength of an experimental steel was evaluated by tensile tests as a function of the austenitic grain size in a medium-carbon steel and low-alloy Fe-1.0Cr-1.0Mo-0.30V. The prior austenitic grain was modified by heat treatment through austenitizing parameters, temperature and time. In turn, the austenitic grain size was determined by the oxidation method and etching to reveal and quantify the boundaries and grain size. To evaluate the effect of the austenitic grain on the strength, the tension test was used under different treatment conditions: normalized, annealing and quenching with brine and oil. Finally, from the results obtained, it was observed that the tensile strength depends on the prior grain size and the treatment condition. In this sense, the strength increased in the specimens with smaller grain size in their respective conditions, while the percentage of elongation decreased with the cooling severity of heat treatment.
|Iron and Steel, Phase Transformations, Characterization