Bibliographic citations
Tavara, G., (2024). “Influencia del tiempo de revenido sobre la tenacidad a la fractura en deformación plana K(IC) en el acero ASTM A-36” [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/21246
Tavara, G., “Influencia del tiempo de revenido sobre la tenacidad a la fractura en deformación plana K(IC) en el acero ASTM A-36” []. PE: Universidad Nacional de Trujillo; 2024. https://hdl.handle.net/20.500.14414/21246
@phdthesis{renati/1044401,
title = "“Influencia del tiempo de revenido sobre la tenacidad a la fractura en deformación plana K(IC) en el acero ASTM A-36”",
author = "Tavara Aponte, Gaston",
publisher = "Universidad Nacional de Trujillo",
year = "2024"
}
The influence of tempering time on the KIC planar deformation fracture toughness in ASTM A36 steel was investigated, using the linear elastic stress analysis method in mode I. The specimens were precracked by fatigue, applying an oscillating stress between 0.06SY and 0.76SY in the delivery state for 20000 cycles; then they were tempered in water (TAus = 840ºC) and tempered for 15, 30 and 45 minutes at a temperature of 300ºC. For the fracture toughness tests, the ASTM E-399 standard was used. The results obtained show a direct relationship between the tempering time and the Fracture Toughness (KIC), reaching a value of 34.2 MPa.m1 / 2 in the hardened state and 36.6; 38.5 and 45.3 Mpa.m1 / 2 in the tempering stages for 15, 30 and 45 minutes respectively. Noting that there is no brittleness due to tempering, because this steel contains Silicon, which moves its brittleness zone to a higher temperature zone. Additionally, tensile, hardness, and microstructural analysis tests were carried out; From the results obtained, it is concluded that as the tempering time increases, the fracture toughness (KIC) and the RSX factor increase, but at the same time their hardness, yield stress and breaking stress decrease, this being due to their change. microstructural that is produced, from a hard and brittle phase microstructure to a less hard, but more tenacious one.
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