Estudio del comportamiento de concentradores de esfuerzo bajo condiciones de fatiga en aceros para rieles
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Maya Johnson, Santiago
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Resumen: Un estudio de la tasa de crecimiento de grietas por fatiga fue realizado en dos aceros de riel perlíticos, llamados R260 y R370CrHT, que fueron estudiados en dos orientaciones del plano de crecimiento de grieta con respecto a la microestructura. Experimentos independientes se realizaron para cubrir una amplia variación en el crecimiento de la grieta de fatiga, desde el umbral de fatiga (alrededor de 10-9 m / ciclo) a condiciones de fractura rápida.
Abstract: A study of fatigue crack growth rate was conducted on two pearlitic rail steels, namely R260 and R370CrHT, which were tested under two crack plane orientations with respect to the microstructure. Separate experiments were performed to cover a wide variation in fatigue crack growth, from the fatigue threshold (circa 10-9 m/cycle) to rapid fracture conditions.
Abstract: A study of fatigue crack growth rate was conducted on two pearlitic rail steels, namely R260 and R370CrHT, which were tested under two crack plane orientations with respect to the microstructure. Separate experiments were performed to cover a wide variation in fatigue crack growth, from the fatigue threshold (circa 10-9 m/cycle) to rapid fracture conditions.